ASTM B-75 - 1997 - Standard Specification for Seamless Copper Tube

7/27/2019 ASTM B-75 - 1997 - Standard Specification for Seamless Copper Tube

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~ ~ Designation: B 75 - 97Standard Specification fClrSeamless Copper Tube1This Standard is issued Wider the fixed designation B 75; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year oflast l'eision. A numbel'in parentheses indicates the year ofl ast reapprovaI. Asuperscript epsilon (.) iI!dicates an editorial change since f:he last revision.or reapprovaI..This specijidztibn liaS been approved for rille by agencies of he Department ofDejens(!. Consult the DoD Index of Specifli:ations andStandards for the specific year of ssue which has been adopted by the DeparfT1WII of )e/ense.

1. Scope*1.1 This specification2 establishes the' requi rements forseamless round, rectangular, and square copper tube suitablefor general engineering a p p l i c a t i ~ n s . '1.1.1 Tubes made from any of the folloWing Copper UNSNo. designations shall be supplied unless otherwise specifiedin the contract or purchase order:

Copper UNS No. Type of CopperClOlOO ~ n - f r e e electronicC10200 Oxygen-free without residUal deoxidantsC10300 Oxygen-free, extra low phosphorusCIOSOO Oxygen-free, low phosphorusCl2000 Phosphorus deoxidized, low residual phosphorusCl2200 phosphoruS deoxidized, high residual phosphorus

1:2 The values stated in inch.;potmd units are the standardexcept for grain size values wInch are given in SI units.1.3 This specification is the companion to SI SPecifiCationB 75M; therefore no SI equivalents are presented in thisspecification. ' .1.4 The following hazard statement pe$ins 9nly 'totest method described in Sections 20.5.2.1, 21.2.9, and21.2.10 of this specification: Thisstandard does notpurport \to address all of he safety concerns, i jany, associated with itsuse. It is the responsibility of the user of this "standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2. Referenced Documents

2.1 ASTM Standards:B 75M Specification for Seamless Copper Tube (SI)3B 153 Test Method for Expansion (Pin Test) of Copperand Copper-Alloy Pipe and Tubing3B 170 Specification for Oxygen-Free ElectrolyticCopper-Refinery Shapes3B 193 Test Method for Resistivity ofElectrical ConductorMaterials4B 251 Specification for General Requirements forWrought Seamless Copper and Copper-Alloy Tube3

1 This specification is under the jurisdiction of ASTM Committee 8-5 onCopper and Copper Alloys and is the direct responsibility of Subcommittee B05.04on Pipe and Tube.

Current edition approved Feb. 10, 1997. Published October 1997. Originallypublished as B 75 - 2ST. Last previous edition B 75 - 95 a2 For ASME Boiler and Pressure Vessel Code applications refer to relatedSpecification 88-75 in Section II of hat Code.3 Annual Book ofASTM Standards, Vol 02.01.4 Annual Book ofASTM Standards, Vol 02.03.

B 577 Test Methods for Hydrogen Embritt lement ofCo r3 .ppe ,B 601 Practice for Temper Designations for Copper andCopper Alloys-Wrought and Cast3E 3 Test Methods of Preparation of MetallographicSpecimenssE 8 Test Methods for Tension Testing of MetallicMaterialsSE 18 Test Methods for Rockwell Hardness and RockwellSuperficial Hardness of Metallic MateriaIssE 53 Test Methods for Chemical Analysis ofCopperi'E 62 Test Methods for Chemical Analysis of COpper andCopper Alloys,(photometric Methods)6E 112 Test Methods for 'Determining Average Grain SizeSE 243 PraCtice for Electromagnetic (Eddy-Current) Examination of COpper and Copper-AlloyTuhes7E 255 Practice for Sampling Copper and Copper Alloysfor Determination of Chemical COmposition6E .527 J>raptice for Numbering Metals and Alloys (UNS)83. Ordering Information

3.1 Orders for product shall include the following infor.miltion: ", 3.1.1 ASTM designation ~ d year of issue ( for example,B 75 ~ 9 5 ) ,3.1.2 COpper UNS No. (for example, ClOl00),3.1.3 Temper (Section 8),3.1.4 Dimensions; diameter or distance between parallelsurfaces, and wall thickness (Section 17),3.1.5 How furnished; coils or straight lengths,3.1.6 Number of pieces or footage; each size and type,3.1.7 Total weight,3.1.8 When product is purchased for ASME Boiler andPressure Vessel Code application, and3.1.9 When product is purchased for agencies of the U.S.Government.3.2 The following options are available and shall bespecified at the time of placing the order, when required:3.2.1 Electrical mass resistivity test,3.2.2 Hydrogen embrit tlement test,3.2.3 Hydrostatic test,3.2.4 Pneumatic test,

S Annual Book ofASTM Standards, Vol 03.01.6 Annual Book ofASTM Standards, Vol 03.05.7 Annual Book ofASTMStandards, Vol 03.03.8 Annual Book ofASTM StandiJrds, Vol 01.01.

* A Summary of Changes section appears at the end of this specification.82


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~ ~ 875TABLE 1 Chemical Requirements

Element

CopperC, minCopperc +phosphorus, minPhosphorusArsenic

C10100A99.99

C10200B99.95

Composition, %Copper UNS No.

C10300 C1080099.95 99.95

0.001-0.005 0.005-0.012

Cl2000 Cl220099.90 99.9

0.004-0.012 0.Q15-0.040

C1420099.40

0.015-0.0400.15-0.50A Refer to Table 1, Chemical Requirements, Grade 1, of Specification B 170 for imJUitY limits for Copper UNS No. C1 01 00.B Refer to Table 1, Chemical Requirements, Grade 2, of Specification B 170 for impurity fimits for Copper UNS No. C10200.C Copper (including silver).

3.2.5 Certification, and3.2.6 Test report.4. General Requirements

4.1 The following sections of Specification B 251 are apart of this specification.4.1.1 Terminology, General,4.1.2 Material and Manufacture,4.1.3 Workmanship, Finish, arid Appearance,4.1.4 Significance of Numerical Limits,4.1.5 Inspection,4.1.6 Rejection and Rehearing,4.1.7 Certification,4.1.8 Mill Test Reports,4.1.9 Packaging and Package Marking, and4.1.10 Supplementary Requirements. .4.2 In addition, when a section with an identical title tothose referenced in 4.1 appears in this specification, and is inconflict with the section appearing in Specification B 251,the section in this specification shall prevail. '

5. Terminology, Specific5.1 Definitions ofTerms Specific to This Specification:5.1.1 capable of-the test need not be performed by theproducer of the material. However, should subsequenttesting by the purchaser establish that the material does notmeet these requirements, the material shall be subject torejection.5.1.2 unaided eye-without visual enhancement; however, corrective spectacles necessary to obtain normal visionshall be permitted.

6. Materia l and Manufacture6.1 Material-The material of manufacture shall be billets, bars, or tube of Copper UNS9 No. C10100, C10200,C10300, C10800, C12000, or C12200, and shall be of suchsoundness as to be suitable for processing into the tubularproducts described.6.2 Manufacture--'-The tube shall be manufactured bysllch hot- and cold-working processes as to produce ahomogeneous, uniform wrought structure in the finishedproduct. I t shall be cold drawn to the finished size and wallthickness. When cold-drawn temper is required, the finaldrawing operation shall be, such as to meet the specifiedtemper. When annealed temper is required, the tube shall beannealed subsequent to the final cold draw.9 Refer to Practice E 527 for explanation of unified numbering system (iJNS).

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. 7. Chemical Composition7.1 The material shall conform to the requirements inTable 1 for the specified Copper UNS No. designation.7.1.1 These specification limits do not preclude the presence of other elements. Limits are permitted to be established and analysis required for unnamed elements byagreement between the manufacturer or supplier and the

purchaser.8. temper

8.1 The requirements and size availability of tube in thecold-drawn tempers H55, H58, an d H80, as defined inPractice B 601, are specified in Table 2.8.1.1 Rectangular, including square, tube shall normallybe supplied only in H58 temper, however, tube in H55 orH80 temper is permitted to be supplied as agreed uponbetween the manufacturer and the purchaser.8.1.1.1 For any combination of diameter and 'wall thickness not listed under H80 temper, the e q u i r e m ~ n t s specifiedfor H58 temper shall apply.8.2 The requirements and size availability of tube in theannealed t e m ~ r s 050' and 060, as defined in PracticeB 601, are specified in Table 2. .

NOTE .I-The purchaser shall confer with' the' manufacturer orsupplier for the availability of product in a specific temper.'NOTE 2-Refer to Appendix Xl for recommended applicationsbased on temper.

9. Grain Size Requirements9.1 Tube in the annealed temper shall conform to thegrain size specified in Table 2 . .

10. Physical Property Requirements .10.1 Electrical Resistivity-When specified in the contract or purchase order, tube ordered for electrical conductorapplication produced from Copper UNS No., C10100,C10200, C10300, or CI2000 shall have an electrical massresistivity; ym2, no t to exceed the following limit for thespecified copper and temper when tested in accordance withTest Method B 193: 'Temper CIOIOO

060,050 0.15176H55, H58, HSO 0.15614

Copper UNS No.C10200 CIOJOO0.153280.15737. 0.156140.15940

C120000.170310.17418

NOTE 3-Refer to ' AppendixX2 for the International Annealed. Copper Standard (lACS) electrical conductivity equivalents.


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4t 875TABLE 2 Mechanical Property Requirements of Drawn-Temper and Annealed-Temper Tube

Temper Designation Outside Diameter, Rockwell Hardness Yieldor Major Average Tensile Strength, Strength,ADistance Between Wal Thickness, n. GrainOutside Parallel, 'Size;mm ksiB min.,Surfaces,in., Scale ' 'Hi:i"dness ksiBtandard FOITTlilrH55 Light-drawnc all all 30TD 30 to 60 36-47 30H58 Drawn (general all all 30TD 30 min 36mn 30purpose)H80 Hard-drawnc up to 4 0.020 to 0.250, i1cI 30T D 55 min 45 min 40060 Soft anneaJ all 0.015 to 0.035 15TE 60 max 0.040 mi"I 30 min 9F

0.035 and over FE 50 max 0.040 min 30 min 9F050 Light ameaJ all 0.015 to 0.035 15TE 65 max 0.040 max 30 min 9F

0.035 and over FE 55 max 0.040 max 30mjrI 9FA YN!Id stre,ngth to be e t e r m i ~ at 0. 5 %extension urider load.B ksi =1000 psi: .'C lJQht-dravim and hard-drawn tempers are noimaIIy available in round tubes only.D Rockwel ~ valUlj!S shall apply only to tubes having a wall thickness of 0.020 in. or over, to round 1lD!s having an inside diameter of 0/111 n. or over, and torectangular including square tubes having an inside major distance between paraIeI surfaces of 0/'8 in. or over. Rockwell hardness tests shaI be 1fI8de on the inside Slriace

the tube. When suitable equipment is not available for determiling th e speCified Rockwell hardness, other RockweI scaJes and values ar e permitted to be specified togreement between pm:haser and supplier.E Rockwell hardness vaJues shall apply only to tubes h amg a waI thickness of 0.015 in. or over, to round 1lD!s havin!i an irliiide Iiameter of 0/'8 n. or over, and torectangular including square tubes having an inside major distance between parallel surfaces of 0/'8 n. or over. For all other tube no RockweU values shall apply. Rockwell

hardness tests shaI be m8de (1 ) the. inside u ~ of the tube. Whe!i suitable eqLipment is not available for determiling the specified Rockwell haIUless, other RockwellcaJes and values ar e to be specified subject to agreement between pm;haser and supprlel".F Light straighteningopeniIiOn is permitted. .

11. Mechanical Property Requirements11.1 Tensile and Yield Strength'ILl.1 The tUbe; sWill conform to the requirements ofable 2 for the specified temr aild wall thickiless.11.1.2 For any combination of diamet(rr arid wall thick

ness 'not listed?imder H80, the reqUirements fo r :a58 sballpply." ' :": '11.2 Rockwell Hardness:11.2.1 The, tube ,shall conform to the requirements ofTable 2 f o r ' t h ~ 'specIDed temper and w3u thickness.11.2.1.1 ,The Rockwell Hardness values for tube in theH55, H58, and H80 temper shall apply only to the following:(a) Tubes having a wall thickness of 0.020 in. and over,(b) Round tubes having an inside diaIl!:eter of 5 /16 !no andover,(c) Rectangular and square tu1)es"l1aving m.ajor distancesbetween parallel surfaces of 3/16 in. and' over .11.2.1.2 Th e Rockwell Hardness values for tube in the060 an d 050 temper shall apply orily to the following:(a) Tubes having a wall thicla!:ess of 0.015 in,.,and over,(b) Round tubes having an inside diameter pf 5/16 in. andover, ,

.' , c) RectaDgular an d square tubes h a ~ g inside majordistances betWeen parallel surfaces of3/16 in. an d over.11.3 Straightening7light straightening is permitted fortube in the 060 and050 temper.12. PerfeJrmaDce Requirements

12.1 Expansion Test for Round Tube-When specified inthe contract or purchase order, annealed tubes shan becapable ofwithstanding an expansion of he outside diameterof 40% for tube 3/4 in, aJld under and 30 % for tube over 3f4

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in. Th e tubesball show no cracking or rupture visible to theunaided eye. .13. Microsco,icalExamination

13.1 Tubes furnished in Copper UNS No. C10100,C10200, C10300, and C12000 shall be essentially free ofcuprous o x i d ~ a s determined by Procedure A of TestMethods B 5.77,14. Hydrogen Embrittlement

14.1 When specified in the contract or purchase order,tubes produced in all designated copper material shall becapable ofconforming to the requirements ofProcedure B ofTest Methods B 577.15. Purchases for U.s. Government Agencies

15.1 When the contract or purchase order stipulates thepurchaSe is for an agency of the u.s. Government, the tubesfurnished shall, conform to the conditions speCified in theSupplementarY Requirements of Specification B 251. r16. Nondestructive Test

16.1 The tubes sball be tested in the drawn tempers or asdrawn prior to the final-annealed temper unless otherwiseagreed upon between the manufacturer and the purchaser.16.2 Electromagnetic (Eddy Current) Test:16.2.1 ,Each tube up to and including 31fs in. in outsidediameter shall be subjected to test.16.2.2 Whentestea in accordance with Practice E 243,tubes which do not actuate the signaling device of he testing

unit shall be considered as conforming to the requirementsof the test. .


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4 ~ 875TABLE 3 Coil Length Tolerances (Specific Lengths)

Outside Diameter or Major DistanceBetween Parallel Surfaces, in.~ t 0 2 , incl

Tolerances, in., AI Plus, forNominaJ L..erigths, ft~ to 50, incI Over 50 to 100, incI

12 24

16.3 Hydrostatic Pressure Test-When specified in thecontract or purchase order, each tube shall be capable ofwithstanding an internal hydrostatic pressure sufficient toproduce a fiber stress of 6000 psi without leakage. The tubeneed not be subjected to a pressure gage reading over 1000psi unless specifically stipulated in the contract or purchaseorder.16.4 Pneumatic Pressure Test-When specified in thecontract or purchase order, each tube shall be capable ofwithstanding an internal air pressure of 60 psi, minimum, for5 s without leakage.

17. Dimensions, Mass, and Permissible Variations17.1 The dimensions an d tolerances for product furnishedto this specification shall be as specified in the followingtables an d related sections of the current edition of Specifi

cation B 251:17.1.1 Wall Thickness Tolerances-Refer to Tables 1and2. 17.1.2 Tolerancesfor Diameter or Distance Between Par-allel Swfaces-Refer to Tables 3 and 4.17.1.3 Length Tolerances-Refer to Tables 5 and 6.17.1.4 Straightness Tolerance-Refer to Table 7.17.1.5 Comer Radius for Rectangular Including SquareTube-Refer to Table 8.17.1.6 Roundness, Squareness of Cut and Twist Toler

ances for Rectangular and Square Tubes-Refer to titledsections.17.2 Length Tolerances for Tube in Coils-Refer toTables 3, 4, and 5 of Specification B 75.

18. Sampling18.1 The lot size, portion size, and selection of sampleportions shall be as follows:

18.1.1 Lot Size-An inspection lo t shall be 10 ()()() Ib orfraction thereof,18.1.2 Portion Size-Sample pieces shall be selected to berepresented of the lot as follows:Number of Pieces in Lot

I to soNumber of Portions to Be TakenA

I51 to 200 2201 to 1500 3

A Each test portion shaD be taken from a separate tube.18.2 Chemical Composition:18.2.1 The composite sample shall be taken in approxi

mate equal weights from each portion piece selected in18.1.2 an d in accordance with Practice E 255. Th e minimumweight of the composite shall be 150 g.18.2.2 The manufacturer shall have the option of sampling at the time the castings are poured or taken from thesemifinished product. The number of samples taken duringthe course of manufacture shall be as follows:

18.2.2.1 When sampled at the time castings are poured, atleast two samples shall be taken, one after the start an d onenear the end of the pour, for each group of castings pouredsimultaneously from the same source of molten metal.18.2.2.2 When samples are taken from the semifinishedproduct, a sample shall be taken to represent each 10 ()()() lbor fraction thereof, except that not more than one sample perpiece shall be required.18.2.2.3 When composition is determined during thecourse ofmanufacture, sampling an d analyses of he finishedproduct is no t required.

18.3 Other Tests-Specimens for all other tests shall betaken from two of he sample portions taken in 18.1.2. In theevent only one sample portion is taken, all specimens shallbe taken from the portion selected.19. Number of Tests and Retests

19.1 Tests:19.1.1 Chemical Composition-Chemical compositionshall be determined as the arithmetic mean of results from atleast two replicate determinations for each specified element.

TABLE 4 Coil Length Tolerances (Mi. Lengths)(Applicable only to full-length pieces)Tube Outside Diameter or Major DistanceBetween Parallel Surfaces, in.

~ to 1, incIOver 1 to 2, inclA Expressed to the nearest 1 ft.

Tube OUtside Diameter or Major DistanceBetween Parallel Surfaces, in.~ to 1, i1cIOver 1 to 2, incI~ t 0 1 , i n c l

A Expressed to the nearest 1 ft.

Tolerances, for Nominal lengths, ft100, i1cI Over 100 to2000,i1cI

5A or 2 ft, whichever is greater 10A'5A or 2 ft, whichever is greater no tolerances established

TABLE 5 Coil Schedule of Mil Lengths with EndsNominal Length, ft

up to 100, incIup to 100, incIover 100 to 2000, incI

Shortest PermissibleLength, ofNominaJ \.engIhMaxin'unPermissible Wei!1Jtsof Ends, %of LotW ~

1020

B Short pieces are permitted to be included as foIows: up to 10 % of lot we9lt between 50 ft and one quarter of fUllengIh' and up to 40 between one quarter and~ ~ . '85


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4Utt B 7519.1.2 Grain Size, Electrical Resistivity, Tensile and, Yield

and Rockwell Hardness-These tests shall beas the average of results" from tw,o, specimens

d each specimen shall conform to spegication require19.1.3 Other Tests-At least two' s p e c i m e ~ shall beof he other tests an d each shall conform torequirements.19.2 Retests:19.2.1 When requested by the manufacturer or supplier, a

be permitted when test results obtained by thefail to conform with the product specification19.2.2 Retesting shall be as directed in this specificationr th e initial test except for the ilUinber of test specimensshall be twice that normally required for the test.19.2.3 Test results for all speci:Qiens shall conform to this

in retest an d failure to conorm shall be cause for lot rejection.0. Specimen Preparation20.1 Chemical Analysis-Preparation of the analyticalthe responsibility of the reporting labora20.2 Tensile and Yield Strength Test-The' test specimens

be of he full section of he tube an d shall conform withe requirements of the Test Specimen section of Testethods E 8, unless the limitation of the testing machine

r ~ l u d e s the use of such specimen in which case testspeciinen conforming to Type No. lof Pig. 13 in TestMethods E 8 shall be used.

20.3 Rockwell Hardness:20.3.1 Th e test specimen shall be of a sm; and shape topermit testing by the available test equipment.

20.3.2 Th e surface of the test specimen shall be suBiciently flat an d smooth so as to permit the accuratedetermination of hardness.20.3.3 Th e test specimen shall be free from scale an dforeign matter an d care shall be taken to avoid any change incondition, for example, heating or cold working. '

20.4 Grain S i z e ~ T e s t specimens shall be prepared inaccordance with the appropriate procedure in Test MethodsE3.20.5 Electrical Resistivity:20.5.1 Th e test specimen shall be full size ,and shall be thefull cross section, of he material it represents when possible.20.5.2 When the test specimen is taken from material in

bulk, care shall be taken that the properties are no t appre-,ciably altered in the preparation.Nom 4-Plastic deformation tends to work-harden a material and

raise its resistivity, while heating tends to anneal the material with asubsequent reduction in resistivity.20.5.2.1 When necessary, products are to be rolled or cOld

drawn to a wire approximately 0.080 in . in diameter (12 gageAWG) an d of a convenient length. At least two specimens ofa length sufficient to accommodate the testing equipmentshall be cut from one end of the wire an d annealed atapproximate ly 935 wop for 30 min in an inert atmosphereand rapidly cooled to ambient temperature without undueexposure to air. .

20.6 ExjJansion (Pin) Test-Test specimenS shall conform86

to the requirements of the Specimen Preparation section ofTest Method B 153.20.7 Microscopical ' Examination-The ,test specimenshall be prepared inaecordance with Procedure A of TestMethods B577 and the sPecimen surface shall approximatea radial longitudinal section of round tube or a longitudinalsection of rectangular an d square tube perpendicular to, andbisectirig, the major dimensional,surface.

20.8' Hydrogen Embrittlement-TJ),e test specimen shallconform to the appropriate requirements of Procedure B ofTest Methods B 577.21. Test Methods

21.1 Chemical Composition-The copper composltlonshall be determined, in case of disagreement, as follows:E1emC1lt Test MethodCopper E5 3Phosphorus E 62Arsenic E6 2

21.1.1 The test methods for the determination of o m ~sition for Coppers CIOl00 and C10200 shall be as describedin Annex Al of Specification B 170.21.1.2 Test method(s) for the determination of elemeQt(s)required by contractual or purchase order agreement shall beas agreed upon between the manufacturer an d the purchaser.21.2 The tubes furnished shall conform with the physicalan d mecIulnical properties' and other requirements of thisspecification when tested or exaDrined in accordance withthe following appropr iate test method or practice:

TestTensile StrengthYield StrengthRockwell HardnessGrain SizeElectrical ResistivityExpansiOn (pin test)Electromagnetic f u a m i n a t i ~ n (Eddy Current)Microscopical ExaminationProcedureAHydrogen EmbrittlementProcedureB

Test MethodE8E8E 18E1l2B 193B 153E243B577B577

HydrostatiC Pri:ssure B 75, 21.2.9Pneumatic Pressure B 75, 21;2.1021.2.1 Tensile strength shall be determined in accordance

with Test Methods E 8.21.2.1.1 Whenever test results are obtained from bothfull-size and machined specimens and they differ, the testresults from the full-size specimens shall prevail.21.2.2 Yield strength shall be determined at 0.5 % extension-under-load...21.2.3 Rockwell hardness shall be determined on theinside surface of the tube and a minimum of three readingsshall be taken on each specimen, each at a different location.21.2.3.1 When suitable equipment is no t available fordetermining he Specified Rockwell hardness, other Rockwellscales and values are permitted to be specified by agreementbetween the manufacturer and the purchaser.21.2.4 Grain size shall be determined, in case of dispute,by the intercept method.

21.2.5 Electrical Resis tivi ty-The 1in:iit of measurementuncertainty shall be 0.30 % as a prOcess control methodan d O.15 % as an umpire method. .21.2.6 Microscopical Examination-Cuprous oxide con-


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41 875tent shall be determined in accordance with Procedure A, or,in case of dispute, Procedure C, Cosed Bend Test, of TestMethods B 577 shall be followed.21.2.7 Hydrogen Embrittlement-Procedure B shall befollowed, or, in case of dispute, Procedure C, Cosed BendTest, of Test Methods B 577 shall be followed.

21.2.8 Electromagnetic (Eddy-Current) Test-Each tubeup to and including 31/8 in. in ontside diameter shall besubjected to an eddy-current test. Testing shall follow theprocedures in Practice E 243. Tubes shall be passed throughan eddy-current test unit adjusted to provide information onthe suitability of the tube for the intended application.21.2.8.1 Either notch depth or drilled hole s tandards shallbe used.(a) Notch depth standards, rounded to the nearest 0.001in. shall be 22 % of the wall thickness. The notch depthtolerance shall be 0.OOO5 in .(b) Drilled holes shall be drilled radially through the wallusing a suitable drill jig that has a bushing to guide the drill,care being taken to avoid distortion of he tube while drilling.The diameter of the drilled hole shall be in accordance withthe following and shall no t vary by more than +0.001,-0.000 in. of the hole diameter specified.Tube Outside Diameter, Diamete r of DriI1ed Holes, DriI1in. in. Number

'/ . to 3/4, inel 0.025 72Over 3/4 to I, inel 0.031 68Over I to Ilf4, inel 0.036 64Over 1'/. to 1'/2, inel 0.042 58Over 1'12 to J31., inel 0.046 56Over PI. to 2, inel 0.052 5521.2.8.2 Alternatively, at the option of the manufacturer,using speed-insensitive eddy-current units that are equipped

to select a fraction of the maximum imbalance signal, thefollowing percent maximum imbalance signals shall be used:

StandaId Tube Size, in. Maximum Perrent ImbalanceSignal MagnitudeUp to 3/8, inel 0.2'12 to 2, incl 0.3Over 2 to 3, inel 0.4

21.2.8.3 Tubes that do no t activate the signalling device ofthe eddy-current tester shall be considered as conforming tothe requirements of this test. Tubes with discontinuitiesindicated by the testing unit are permitted, at the option ofthe manufacturer, to be reexamined or retested to determinewhether the discontinuity is cause for rejection. Signals thatare found to have been caused by minor mechanical damage,soil or moisture, shall not be cause for rejection of the tubesprovided the tube dimensions are still within prescribedlimits and the tube is suitable for its intended application.21.2.9 Hydrostatic Test-The internal hydrostatic pressure necessary to produce the required fiber stress shall bedetermined by the following equation for thin hollow cylin-ders under tension. .

P = 2St/(D - O.8t)where:P = hydrostatic pressure, psi (or MPa);t = thickness of tube wall, in. (or mm);D = outside diameter of tube, in. (or mm); an dS = allowable fiber stress of the material, psi (MPa).21.2.9.1 The tube need not be tested at a pressure gagereading over 1000 psi unless so specified.21.2.10 Pneumatic Test-The test method shall permiteasy visual detection of leakage, such as having the materialunder water or by the pressure differential method.22. Certification

22.1 Certification is mandatory when product is orderedfor ASME Boiler and Pressure Vessel Code applications.23. Keywords

23.1 seanitess copper tube; seamless tube; tube

APPENDIXES(Nonmandatory Information)

Xl. RECOMME NDED APPLICATIONSX1.1 Tube in the H55 temper is recommended when a

tube of some stiffness is required yet capable of being bentwhen necessary.

X1.2 Tube in the H58 temper is recommended for

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general applications where there is no specific need for highstrength or bending qualities.X1.3 Tube in the H80 temper is recommended forapplications where there is a need for a tube as strong astechnically feasible for the size indicated.


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4t 875X2. INTERNATIONAL ANNEALED COPPER STANDARD (ELECrRICAL CONDUCTIVITY EQUIVALENTS)

Electrical Resistivity, ngtm20.151760.153280.156140.15737

ConductivitY, %101.00100.0098.1697.40

Electrical Resistivity ngtm20.159400.170310.17418

Conductivity, %96.169088

SUMMARY OF CHANGESThis section identifies the location of selected changes to this Specification that have been incorporatedsince the 1992a issue, and the following are some of the changes incorPorated in this revision:

(1) Orderihg Information-Options available identified.(2) 'General Requirements-The applicable sections of251 identified. .' .(3) Number of Tests and Retestg..;.-The 'conditions underted are more definitively stated.(4) Sampling and Specimen Preparation sections added.

(5) Test M e t h ~ I n d i v i d u a l test methods are identifiedand eddy-current parameterS significantly revised.(6) Recommended applications for the various tempersrelocated from Temper section text to an appendix.(7) Nonmandatoty language deleted and i-epbiced withmandatory language. .

TheAmerican Sopiety fo r Testing and Milleria/s takes no position respecting the validity of any patent rights assetted in connectionwith any !tam mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any suchpatent rights, and the risk of nfringement of such rights, are entirely their own responsibility.

This standard s subject to revision at arty time by the responsible technical committee and mustbe reviewed evety five years andif not evised, either reapproved or withdrawn. Youtcomments are nvited either fo r revision of his standard or or additional standardsand should be addressed to ASTM HeadqiJarters. Your comments will receive careful consideraIion at a meeting of the responsibletechnical committee, which you may attend. " you feel that your comments have not received a fair hearing you should ma/ce yourviews known to the ASTM Committee on Standards, 100Ban Harbor Drive, West Conshohocken, PA 19428.

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Designation: B 75M - 97METRIC

Standard Specification forSeamless Copper Tube [Metric]1This standard is issued under the fixed designation B 75M; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of ast revision. A num ber in parentheses indicates the year of ast reapproval. Asuperscript epsilon (.) indicates an editorial change since the last revision or reapproval.This specifiCiJlion has been approved for use by agencies of he Department of ~ e n s e . Consult the DoD Index ofSpecifiCiJlions andStandards for the specific year of ssue which has been adopted by the Department of ~ e n s e .

1. Scope*1.1 This specification2 establishes the requirements forseamless round, rectangular, and square copper tube suitablefor general engineering applications.1.1.1 Tubes made from any of the following Copper UNSNo. designations shall be supplied unless otherwise specified

in the contract or purchase order:Copper UNS No. Type of Copper

CI0100 Oxygen-free electronicC 10200 . Oxygen-free without residual deoxidantsC10300 Oxygen-free, extra low phosphorusC10800 Oxygen-free, low phosphorusC12000 Phosphorus deoxidized, low residual phosphorusC 12200 Phosphorus deoxidized, high residual phosphorus1.2 The values stated in S1 units are the standard.1.3 This specification is the companion to inch-poundSpecification B 75.1.4 The following hazard statement pertains only to thetest method described in Sections 20.5.2.1, 21.2.9, an d21.2.10 of this specification: This standard does not purportto address allof he safety concerns, ifany, associated with its

use. It is the responsibility of the user of this standard toestablish appropriate safety and health practices.and deter-mine the applicability ofregulatory limitations prior to use.

2. Referenced Documents2.1 ASTM Standards:B 75 Specification for Seamless Copper Tube3B 153 Test Method for Expansion (Pin Test) of Copper

and Copper-Alloy Pipe and Tubing3B 170 Specification for Oxygen-Free Electrolytic Copper-Refinery Shapes3B 193 Test Method for Resistivity of Electrical ConductorMaterial4B 251M Specification for General Requirements forWrought Seamless Copper and Copper-Alloy Tube[Metricp

1 This specification is under the jurisdiction of ASTM Committee 805 onCopper and Copper Alloysand is the direct responsibility of Subcommittee B05.04on Pipe and Tube.Current edition approved February 10, 1997. Published October 1997. O r i g i ~nally published as B 75M - 84. Last previous edition B 75M - 95.

2 For ASME Boiler and Pressure Vessel Code applications refer to relatedSpecification S8075 in Section II of hat Code.3 Annual Book ofASTM Standards, Vol 02.0 I.4 Annual Book ofASTM Standards, Vol 02.03.

B 577 Test Methods for Hydrogen Embritt lement ofCopperlB 601 Practice for Temper Designations for Copper an dCopper Alloys-Wrought and Cast3 .E 3 Test Methods of Preparation of MetallographicSpecimens5E 8M Test Methods for Tension Testing of MetallicMaterials (Metric)5E 18 Test Methods for Rockwell Hardriess and RockwellSuperficial Hardness of Metallic Materials5E 53 Test Methods for Chemical Analysis of Copper6E 62 Test Methods for Chemical Analysis of Copper an dCopper Alloys (Photometric Methods)6E 112 Test Methods for Determining Average Grain SizeSE 243 Practice for Electromagnetic (Eddy-Current) Examination of Copper and Copper-Alloy Tubes7E 255 Practice for Sampling Copper and Copper Alloysfor the Determination of Chemical Composition6E 527 Practice for Numbering Metals and Alloys (UNS)8

3. Ordering Information3.1 Orders for product shall include the following information:3.1.1 ASTM designation an d year of issue (for example,B 75M-96),3.1.2 Copper UNS No. (for example, C101(0),3.1.3 Temper (Section 8),3.1.4 Dimensions; diameter or distance between parallelsurfaces, and wall thickness (Section 15),3.1.5 How furnished; coils or straight lengths,3.1.6 Number of pieces or footage; each size and type,3.1.7 Total weight,3.1.8 When product is purchased for ASME Boiler andPressure Vessel Code application, and

. 3.1.9 When product is purchased for agencies of the U.S.Government.3.2 The following options are available and shall bespecified at the time of placing the order, when required:3.2.1 Electrical mass resistivity test,3.2.2 Hydrogen embrittlement test,3.2.3 Hydrostatic test,3.2.4 Pneumatic test,

SAnnual Boole ofASTM Standards, Vol 03.01.6 Annual Boole ofASTM Standards, Vol 03.05.7 AnnualBook ofASTM Standards, Vol 03.03.8 Annual Boole ofASTM Standards, Vol 01.01.

* A Summary of Changes section appears at the emI of this specification.89


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4 ~ 875MTABLE 1 Chemical Requirements

Element

min+phosphorus, min

C1010099.99

C10200A99.95

C1030099.95

.1 ;0,001-0.005

Composition, %Copper 1J118..'"No,C1080099.95

0.0Q5-0.012

C12(JOO99.90

0.004-0.012, ...

C1220099.9

0:015-0.040

C1420099.40

0.015-0.0400.15-0.50A Refer to Table 1 , Chemical Requirements, Grade 1, of Specification B 170 for impurity limits for C o p p e r , ~ No .C1 0100.B Refer to Table 1, Chemical Requirements, Grade 2, of p e C f f i c a t i o n B,170 for impurity liln!!s,fur GoPperIJIIS No. C10200.3.2.5 Certification, and3.2.6 Test report.

, i' .General Requirements4. t 'The following sections of Specification B 251 M are aof this specification.4.1.1 Terminology, General,4.1.2 Material and Manufacturer,4.1.3 Workmanship, Finish, and Appearance,4.1.4 Significance of Numerical Limits,4.1-.5 'Inspection,4.1.6 Rejection and Rehearing,4.1. 7 Certification,4.1.8 Mill Test Reports,4.1.9 Packagingaild.Package Marking; and4.1.10 Supplementary'ReqUirements.4.2 In addition, when:a sectiomwith'an identical title to4.1 appears in this specification, and is inthe section:appearing ill Specification B 251M,e section in this specification shall prevail.

5.1 Definitions ofTerms Specific to This Specification:'S.l.lcapable of-the test need not be performed by theof the material. However, should subsequentby the purchaser establish that th e material does noteet these requirements, the material shall be subject toejection.5.1.2 unaided eye-without Visuru enhancement; however, corrective spectacles necessary to 'obtain normal visionshall be permitted.Material and Manufacture6.1 Material-The'matenal of'ma'nufacture shall be bil

ets, cast bars, or tube dfCopper UNS9 No. C10100, CI0200,10300, C10800, C12000, or CI2200, and shall be of suchsoundness as to be' suitable for proeessirig into thetublllarproducts described. '6.2 Manufacture-The tube shall be manufactured bysuch hot- and cold-working processes as to produce ahomogeneous, uniform wrought s t r t i ~ i l i r e ' in the finishedproduct. It shall be cold drawn to thiffinished siZe and wallthickness. When cold-drawn temper is required, the finaldrawing operation shall be s u c ~ , as, t


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4mtJ B 75MTABLE 2 Mechanical Property Requirements of Drawn-Temper and Annealed-Temper Tube

Temper Designation Outside Diameter, Rockwell Hardness YIIlkf .or Major Average Tensile Strength, Strength,ADistance Between Wall Thickness, mm Grain MPa min,Standard Former Outside Parallel Scale Hardness Size, mm MPaSurfaces, mmH55 Light-drawnB all aU 30Tc 30 to 60 250-325 205H58 Drawn (general purpose) all all 30Tc 30 min 250 min 205H80 Hard-drawn B up to 102 0.508 to 6.35, incl 30Tc 55 min 310 min 275060 Soft anneal all 0.381 to 0.889 15TD 60 max 0.040 min 205 min 62E0.889 and over FD 50 max 0.040 min 205 min 62E050 Light anneal all 0.381 to 0.889 15TD 65 max 0.040 max 205 min 62E0.889 and over FD 55 max 0.040 max 205 min 62E

A Yield strength to be determined at 0.5 % extension under load.S Light-drawn and hard-drawn tempers are normally available in round tubes only.c Rockwell hardness values shall apply only to tubes having a wall thickness of 0.508 mm or over, to round tubes having an inside diameter of 8.0 mm or over, and torectangular including square tubes having an inside major distance between paraJIeI surfaces of 5.0 rnm or over. Rockwell hardness tests shaI be made on the insidesurface of the tube. When suitable equipment is not available for determining the specified Rockwell hardness, other Rockwell scales and values are permitted to bespecified to agreement between purchaser and supplier. .D Rockwell hardness values shall apply only to tubes having a wall thickness of 0.40 mm or over, to round tubes having an inside diameter of 8.0 or over, and torectangular including square tubes having an inside major distance between parallel surfaces of 5.0 nvn or over. For all other tube no Rockwell values shaD apply. Rockwellhardness tests shall be made on the inside surface of the tube. When suitable equipment is no t available for determining the specified Rockwell hardness, other Rockwelscales and values are permitted to be specified subject to agreement between purchaser and supplier.E Light straightening operation is permitted.

11.1.1 The tube shall conform to the requirements ofTable 2 for the specified temper and wall thickness.11.1.2 For any combination of diameter and wall thickness not listed under H80, the requirements for H58 shallapply.11.2 Rockwell Hardness:11.2.1 The tube shall conform to the requirements ofTable 2 for the specified temper and wall thickness.11.2.1.1 The Rockwell Hardness values for tube in theH55, H58, and H80 temper shall apply only to the following:(a) Tubes having a wall thickness of 0.508 mm and over,(b) Round tubes having an inside diamete r of 8.0 mm and

over,(c) Rectangular an d square tubes having major distancesbetween parallel surfaces of 5 mm and over.11.2.1.2 The Rockwell Hardness values for tube in the060 and 050 temper shall apply only to the following:(a) Tubes having a wall thickness of 0.40 mm and over,(b) Round tubes having an inside diameter of 8 mm andover,(c) Rectangular and square tubes having inside majordistances between parallel surfaces of 5 mm and over.11.3 Straightening-Light straightening is permitted for

tube in the 060 and 050 temper.12. Performance Requirements12.1 Expansion Test/or Round Tube-When specified inthe contract or purchase order, annealed tubes shall becapable ofwithstanding an expansion of he outside diameterof40 % for tube 19.0 mm and under and 30 % for tube over19.0 mm. The tube shall show no cracking or rupture visibleto the unaided eye.13. Microscopical Examination

13.1 Tubes furnished in Copper UNS No. C10100,C10200, C10300, and C12000 shall be essentially free ofcuprous oxide as determined by Procedure A of TestMethodsB 577.14. Hydrogen Embrittlement14.1 When specified in the contract or purchase order,

91

tubes produced in all designated copper material shall becapable of conforming to the requirements ofProcedure B ofTest Methods B 577. .15. Purchases for U.S. Government Agencies

15.1 When the contract or purchase order stipulates thepurchase is for an agency of the U.S. Government, the tubesfurnished shall conform to the conditions specified in theSupplementary Requirements of Specification B 251M.16. Nondestructive Test

16.1 The tubes shall be tested in the drawn tempers or asdrawn prior to the final-annealed temper unless otherwiseagreed upon between the manufacturer and the purchaser.16.2 Electromagnetic (Eddy Cu"ent) Test:16.2.1 Each tube up to and including 79 mm in outsidediameter shall be subjected to test.16.2.2 When tested in accordance with Practice E 243,tubes which do not actuate the signaling device of the testing

unit shall be considered as conforming to the requirementSof the test.16.3 Hydrostatic Pressure Test-When specified in thecontract or purchase order, each tube shall be capable ofwithstanding an internal hydrostatic pressure sufficient toproduce a fiber stress of 41 MPa without leakage. The tubeneed not be subjected to a pressure gage reading over 6.9MPa unless specifically stipulated in the contract or purchaseorder.16.4 Pneumatic Pressure Test-When specified in thecontract or purchase order, each tube shall be capable ofwithstanding an internal air pressure of 400 kPa, minimum,for 5 s without leakage.

17. Dimensions, Mass, and Permissible Variations17.1 The dimensions and tolerances for product furnished

to this specification shall be as specified in the followingtables and related sections of the current edition of Specification B 251M:17.1.1 Wall Thickness Tolerances-Refer to Tables 1 and2.


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~ t 875MTABLE 3 Coil Length Tolerances (Specific Lenglbs)

Outside Diameter or Major DistanceBetween Par'alIeiSurfaces, nun~ to 50.8, incl

Tolerances, nvn, AI Plus, forNOI'ninaIl:engths, m, 15, incl Over 15 ro 30, incI

300 610

17.1.2 Tolerancesfor Diameter or Distance Between Par-lel Surfaces-Refer to Tables 3 and 4.17.1.3 LengthToZerances-Referto Tables 5 an d 6.17.1.4 Straightness Tolerance-Refer to Table 7.17.1.5 Comer Radius for Rectangular Including Squareto Table 8.

.teast two samples shall be taken, one after the start and onenear the end of the pour, for each group of caStmgspouredsimultaneously from the same source ofmolten metal.18.2.2.2 Whetf satIipies"are taken from the semifinishedproduct, a sample. shall tJe taken to reptesent each 5000 kg orfraction, thereof, except that not more .than one sample perpiece shall be required. ': '

18.2,:2.3 Whencomtx>sition is determfued during' theCOll,rse of manufacture, Sampling and analyses of he finiShedproduct is not required.

17.1.6 Roundness, Squareness of Cut and Twist TolerTubes-Refer to titled

18.3 Other Tests-Specimens for all other tests shall betaken from two of he sample portions taken in 18.1.2. In theevent only one sample portion is taken, all specimens shall

OJ be taken,from the O p i ( ) n : ~ l e c t e d . ' ' ,. '

17.2 Length Tolerances for Tube in C o i l s ~ R e f e r to3, 4, and 5 of Specification B 75M.Sampling

18.1 The lot size, portion size, and selection of samplebe as follows:

18.1.1 Lot Sizt:-An inspection lot shall be 5000 kg or18.1.2 Portion Size-Sample pieces shall be selected to beof the lot as follows:

Number of Pieces in Lot1 ro 5051 ro 200201 io 1500

Number of Portions ro Be TakenA123

A Each test portion shall be taken from a separate tube.18.2, Chemical Composition:18.2,1 The composite sample shall be taken in approxi-equal weights from each portion piece selected in

and in accordance with Practice E 255. The ininim.umof the composite shall be 150 g.18.2.2 The manufacturer shall have the option of sam-atthe time the castings are poured or taken from thenumber of samples taken during

e course of manufacture shall be as follows:18.2.2.1 When sampled at the time castings are poured, at

19. Number of Tests and Retests19.1, Tests:'." '" ' , ,19.1.1 ChemicQJ Composition-Chemical compoSitionshall be determined as the arithmetic meanofrt:swts from'atleast two replicate determinations for each Specified element.19.1.2 Grain Size, Electrical Resistivity, Tensile and YieldStrength, and ROCkwell Hatdness.:.-T h ~ tests shali' bereported as the average of reSUlts from two test specimens

and each specimen shall'cbnform to 'specification require-mentS.19.1.3 Other Tests-At least two specimens shall' beprepared for each of he other tests and each shall conform totest requirements.19.2 Retests:

1 9 ~ 2 . 1 When requested by the manufactUrer or supplier, areteSt shall be pertnitted when test rt:swts obtained by thepurChaser fail to cOnform with the prOduct s p e c i f i c a ~ o n

r e q u i r e m e n t ( s ) ~ ., ", , 19.2.2 Retesting shall be as directed in this specificationfor the initial test except fo r the'i1witber of test Specinienswhich shall be twice that riorinally required for the test.,'19.2.3 Test res1ilts forallspeciriieriS shall confonnto: thisspecification's requirem.ent(s)' in retest and failure to con-form shall be cause for lot rejection.

20. Specimen Preparation20.1 Chemical Analysis-Preparation of ' the analytical, ::

TABLE 4 Coil Length Tolerances (MiD Lengths)(Applicable oniy to fuft.length pieces)Tube Outside DiametElr at Major Dist3nceBetween Parallel Surfaces, riIm

~ r o 2 5 , inc!25 ro 50, incIA Expressed to the nearest 300 mm.

Tube Outside Q!ameter or Major DistanceBetween Parallel SuiaCes, min~ ro 25, in


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41 875Mspecimens shall be the responsibility of the reporting laboratory.20.2 Tensile and Yield Strength Test-The test specimensshall be of he full section of he tube and shall conform with

the requirements of the Test Specimen section of TestMethods E 8M, unless the limitation of the testing machineprecludes the use of such specimen in which case testspecimen conforming to Type No. 1 of Fig. 13 in TestMethods E 8M shall be used.20.3 Rockwell Hardness:20.3.1 Th e test specimen shall be of a size an d shape to

permit testing by the available test equipment.20.3.2 Th e surface of the test specimen shall be sufficiently flat and smooth so as to permit the accuratedetermination of hardness.20.3.3 Th e test specimen shall be free from scale an dforeign matter and care shall be taken to avoid any change incondition, that is, heating or cold working.20.4 Grain Size-Test specimens shall be prepared inaccordance with the appropriate procedure in Test MethodsE3.

20.5 Electrical Resistivity:20.5.1 Th e test specimen shall be full size and shall be thefull cross section of the material it represents when possible.20.5.2 When the test specimen is taken from material inbulk, care shall be taken that the properties are not appreciably altered in the preparation.NOTE 4--PJastic deformation tends to work-harden a material andraise its resistivity, while heating tends to anneal the material with asubsequent reduction in resistivity.20.5.2.1 When necessary, products are to be rolled or colddrawn to a wire approximately 2 mm in diameter (12 gage

AWG) and of a convenient length. At least two specimens ofa length sufficient to accommodate the testing equipmentshall be cu t from one end of the wire and annealed atapproximately 500 5C for 30 min in an inert atmosphereand rapidly cooled to ambient temperature without undueexposure to air.

20.6 Expansion,(Pin) Test-Test specimens shall conformto the requirements of the Specimen Preparation section ofTest Method B 153.

20.7 Microscopical Examination-The test specimenshall be prepared in accordance with Procedure A of TestMethods B 577 and the specimen surface shall approximatea radial longitudinal section of round tube or a longitudinalsection of rectangular and square tube perpendicular to, an dbisecting, th e major dimensional surface.

20.8 Hydrogen Embrittlement-The test specimen shallconform to the appropriate requirements of Procedure B ofTest Methods B 577.21. Test Methods

21.1 Chemical Composition-The copper composition.shall be determined, in case of disagreement, as follows:Element Test Methods

Copper E53. Phosphorus E 62Arsenic E6i

21.1.1 The test methods for the determination of compo-sition for Coppers C10100 and C10260 shall be as described93

in Annex Al of Specification B 170.21.1.2 Test method(s) for the determination of element(s)required by contractual or purchase order agreement shall beas agreed upon between the manufacturer and the purchaser.21.2 The tubes furnished shall conform with the physicaland mechanical properties and other requirements of thisspecification when tested or examined in accordance withthe following appropriate test method or practice:

Tensile StrengthYield StrengthRockwell HardnessGrain SizeElectrical ResistivityExpansion (pin test)

Test

Electromagnetic Examinatio n (Eddy Cunent)Microscopical ExaminationProcedure AHydrogen EmbrittIementProcedureB

Test MethodE8ME8ME 18E1l2B 193B 153E243B577B577

Hydrostatic Pressure B 75M, 21.2.9Pneumatic Pressure B 75M, 21.2.1021.2.1 Tensile strength shall be determined in accordancewith Test Methods E 8M.21.2.1.1 Whenever test results are obtained from bothfull-size an d machined specimens and they differ, the testresults from the full-size specimens shall prevail.21.2.2 Yield strength shall be determined at 0.5 % extension-under-Ioad.21.2.3 Rockwell hardness shall be determined on theinside surface of the tube an d a minimum of three readingsshall be taken on each specimen, each at a different location.21.2.3.1 When suitable equipment is not available fordetermining the specified Rockwell hardness, other Rockwellscales and values are permitted to be specified by agreementbetween the manufacturer and the purchaser.21.2.4 Grain size shall be determined, in case of dispute,

by the intercept method.21.2.5 Electrical Resistivity-The limit of measurementuncertainty shall be O.30 % as a process control methodand 0.15 % as an umpire method.21.2.6 Microscopical Examination-Cuprous oxide con-tent shall be determined in accordance with Procedure A, or,in case of dispute, Procedure C, Oosed Bend Test, of TestMethods B 577 shall be followed.21.2.7 Hydrogen Embrittlement-Procedure B shall befollowed, or, in case of dispute, Procedure C, Oosed BendTest, of Test Methods B 577 shall be followed.21.2.8 Electromagnetic (Eddy-Current) Test-Each tubeup to and including 79 mm in outside diameter, shall besubjected to an eddy-current test. Testing shall follow theprocedures in Practice E 243. Tubes shall be passed throughan eddy-current test unit adjusted to provide information onthe suitability of the tube for th e intended application.21.2.8.1 Either notch depth or drilled hole standards shallbe used.(a) Notch depth standards, rounded to the nearest 0.025mm shall be 22 % of the wall thickness. Th e notch depthtolerance shall be 0.013 mm;(b) Drilled holes shall be drilled radially through the wallusing a suitable drill jig that has a bushing to guide the drill,care being taken to avoid distortion of he tube while drilling.The diameter of th e drilled hole shall be in accordance with


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4W}t' B 75Me following an d shall not vary by more than +0.025 mm ,

mm of the hole diameter specified.Outside Diameter, , Diameter of Drilled Holes,

min min6.0 to 19.0, inel 0.635Over 19.0 to 25, inel 0.185Over 25 to 32, inel 0.915Over 32 to 38, inel 1.01Over 38 to 45, inel 1.11Over 45 to 50, inel 1.322

DrillNuntber726864585655

21.2.8.2 Alternatively, at the option of the manufacturer,using speed-insensitive eddy-current units that are equippedselect a fraction of the maximum imbalance signal, theollowing percent maximum imbalance signals shallbe used:Standard Tube Size,mm Maximum Pen:ent Imbalance. Si&naI MagnitudeUp to 9, inel 0213 to 50, inel 0.3Over 50 to 16, inel 0.4

21.2.8.3 Tubes that do not activate the signalling device ofthe eddy-current tester shall be .considered as conforming tothe requirements of this test. 'Tubes with discontinuitiesindicated by the testing unit are perinitted, at theoption ofthe manufacturer, to be reexaIDined or retested to determinewhether the discontinuing is cauSe for rejection. Signals thatare found to have been caused by minor mechanical damage,

soil or moisture, shall not be cause for rejection of the tubesprovided the tube dimensions are still within prescribedlimits and the tube is sUitable for its intended application.21.2.9 Hydrostatic Test-The internal hydroStatic pressure necessary to produce the required fiber stress shall bedeterinined by the following equation for thin hollow cylinders under tension.P = 2St/(D - 0.81)where:P = hydrostatic pressure, MPa;t = thickness of ube a l l ~ mm;D = outside diameter of tube, mm , arid;

(1)

S .=, anowable fiber stress of the materi3l, MPa21.2.9.1 The tube need not betested,at a'pressure gagereading oV,er 6.9 MP a unless so spOOfled:-21.2.10 Pneumatic Test-The ,test method shall permiteasy Visual detection of leakage, such as having the materialunder water or by the pressure


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4 ~ 875M

The American Society for Testing and Materials takes no position respecting the validity ofanypatent rights assened in connectionwith any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any suchpatent rights, and the risk of nfringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed evety five years and

if not revised, either reapproved or withdrawn. Your comments are invitedeither for revision of his standard or or additional standardsand should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsibletechnical committee, which you may attend. if you feel that your comments have not received a fair hearing you should make yourviews known to the ASTM Committee on Standards, 100 Barr Harbor Drive, West Conshohocken, PA 19428.

ASTM B-75 - 1997 - Standard Specification for Seamless Copper Tube

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Transcript of ASTM B-75 - 1997 - Standard Specification for Seamless Copper Tube