ITA October 2006 - cdn.ymaws.com

Copyright ©2006 ATI Wah Chang. All Rights Reserved

ITAOctober 2006


ATI 425™ Titanium


ATI 425™ TitaniumToday

– What is ATI 425™ Titanium– A Few Facts– Features, Advantages, Benefits – Applications– Development Status


• Do you use a hot process to fabricate titanium into products?


• Does the hot manufacturing process add to the cost of doing business?


• If you had a sheet, strip or coil titanium product that is “cold workable”, would that add value – To your business ?– To your customer ?


ATI 425™ TitaniumWhat is it?

An Alpha – Beta AlloyNominal Chemistry

• 4% Aluminum• 2.5% Vanadium• 1.5% Iron• 0.25% Oxygen• Balance Titanium


ATI 425™ Titanium AlloyPatents

U.S. Patent No. 5,980,655, and pending U.S. and foreign patent applications


ATI 425™ Titanium•• Physical Properties Physical Properties

– Density 0.162 lbs/in3– MP ~2950ºF.– Hardness 32-36RC– Beta Transus 1765 - 1785 ºF.


T y p ic a l T e ns ile S t re ng th

6 7

8 9

10 2

14 5 14 5

0

2 0

4 0

6 0

8 0

10 0

12 0

14 0

16 0

Ti - 2 Ti - 1 2 Ti - 9 A TI 4 2 5 ™ Ti - 5( T i- 3 A l- 2 .5 V ) ( T i- 6 A l- 4 V )

Tens

ile S

treng

th m

in. (

ksi)


T yp ica l Y ie ld S tre ng th

4 7

6 6

9 7

12 513 7

0

2 0

4 0

6 0

8 0

10 0

12 0

14 0

16 0

Ti - 2 Ti - 12 Ti - 9 A TI 4 25 ™ Ti - 5( T i- 3 A l- 2 .5V ) ( T i- 6 A l- 4 V )


Typ ica l % E longa t ion

2 6 .2

2 2

15 .2 15

11

0

5

10

15

2 0

2 5

3 0

Ti - 2 Ti - 12 Ti - 9 A TI 425™ Ti - 5(T i- 3 A l- 2 .5V ) (T i- 6 A l- 4 V )


ATI 425™ Titanium

Cold Workable


FeaturesFeatures••Cold Workable Cold Workable ••High Strength High Strength ••Weldable Weldable -- Ductile weldsDuctile welds••Machinable Machinable -- Faster than TiFaster than Ti--6464••Super Plastic Formable Super Plastic Formable -- Like TiLike Ti--6464••Corrosion Resistant Corrosion Resistant -- Like TiLike Ti--64 & Ti64 & Ti--325325

ATI 425™ Titanium


ATI 425TM TitaniumAdvantages

•Better Yield•Smaller Bend Radii•Cold Rolled Finish•Better Gauge Control•Coil Lengths


••Better Yield MeansBetter Yield Means••Plant Efficiencies ImprovePlant Efficiencies Improve

••Better Finish Quality MeansBetter Finish Quality Means••Less Processing TimeLess Processing Time

••Lower Converting Cost MeansLower Converting Cost Means••Better ProfitabilityBetter Profitability

ATI 425TM TitaniumBenefits


•• Aircraft PanelsAircraft Panels•• Formed Structural Panels, Honeycomb, FaceFormed Structural Panels, Honeycomb, Face--sheetsheet•• RollRoll--Formed Structural Components Formed Structural Components •• Cold Formed, Stamped & Coined partsCold Formed, Stamped & Coined parts•• FastenersFasteners•• SuperSuper--Plastic Formed PartsPlastic Formed Parts•• Aircraft Tubing Aircraft Tubing •• Oil Field TubingOil Field Tubing•• Structural & Recreational UsesStructural & Recreational Uses•• Pressure VesselsPressure Vessels

ATI 425™ TitaniumApplications


ATI 425TM Coil0.125” T x 26” Hot Band

ATI 425ATI 425TMTM SPF SPF Cover SheetCover SheetTrial PartsTrial Parts


•• Production to Date = 72,000 lbProduction to Date = 72,000 lb•• Mill Products ManufacturedMill Products Manufactured

••Cold Rolled Cold Rolled -- Sheet, Strip, FoilSheet, Strip, Foil••Cold Reduced Seamless TubingCold Reduced Seamless Tubing••Hot Forged Hot Forged -- Billet, Bar, RodBillet, Bar, Rod••Hot Rolled Hot Rolled -- Plate, Strip (Coil)Plate, Strip (Coil)••Hot Tubular ExtrusionHot Tubular Extrusion••Weld WireWeld Wire

General Development StatusGeneral Development StatusATI 425ATI 425TMTM

0.085” Sheet ~ 500x0.085” Sheet ~ 500x


– ASTM Grade 38– UNS #54250, UNS #54250-1– ASME Boiler Code Case 2532– Other certifications in process

• AMS - #6946 in ballot, moving to Aerospace Council

• AWS

ATI 425TM TitaniumCertifications to Date


ATI 425™TitaniumTubing


Comparison Tubing PropertiesComparison Tubing Properties

YieldYield UltimateUltimate ElongationElongationAlloyAlloy (KSI)(KSI) (KSI)(KSI) (%)(%)

••TiTi--3Al3Al--2.5V2.5V 73 73 –– 115115 90 90 –– 140 16 140 16 –– 2020

••TiTi--6Al6Al--4V ELI 105 4V ELI 105 –– 133133 125 125 –– 150150 7 7 –– 1717

••ATI 425ATI 425™™ TitaniumTitaniumCWSRCWSR 130130 150150 12 12 –– 1616Annealed Annealed 116 116 –– 122122 140 14 140 14 –– 1818


ATI 425™ Titanium

Cold Workable


Thank You

Questions ?

[email protected]


ATI 425ATI 425™™ Titanium Titanium Mechanical PropertiesMechanical Properties

LongitudinalLongitudinal TransverseTransverseAll ProductsAll Products11 Yield Ultimate Elongation Yield Ultimate ElongationYield Ultimate Elongation Yield Ultimate Elongation“Mill Anneal” “Mill Anneal” (KSI) (KSI) (%) (KSI) (KSI) (KSI) (KSI) (%) (KSI) (KSI) (%)(%)

TypicalTypical 122122 136136 1616 138 149 15138 149 15CWCW 150150 176176 88

11 All Products includes: HR plate; All Products includes: HR plate; Wrought Bar & Billet; CR Sheet & strip; Wrought Bar & Billet; CR Sheet & strip; Hot Extrusion; TubeHot Extrusion; Tube


Ti 6AL-4V MACHINABILITY VS ATI-425 MACHINABLITYBASELINE

1422

1115

1159

1190

1223 1238

1276

1348

1390

1413

1100

1150

1200

1250

1300

1350

1400

1450

1 2 3 4 5

PASS NUMBER

POUN

DS

OF

CUTT

ING

FO

ATI 6AL 4V

Ti 6AL-4V MACHINABILITY VS ATI 425 MACHINABLITYACCELERATED (BASELINE X 1.15)

1402

1276

1348

1390

1413 1422

1251

1307

1338

1379

1200

1250

1300

1350

1400

1450

1 2 3 4 5

PASS NUMBER

POU

ND

S O

F C

UTT

ING

FO

6AL 4V ATI ACC

A

Machining ComparisonMachining Comparison

Comparison Cutting forces at Baseline feeds & Speeds

Comparison Cutting forces at Baseline feeds & Speeds X 1.15

ATI 425™ Titanium can be machined 15% faster than 6Al-4VCourtesy Boeing M&PT Machining Lab


Uniaxial Tensile Tests of Titanium Sheet under SPF ConditionsComparison of Ti-425 to conventional T-6Al-4V at 900C and 3x10^-4/sec

0

1000

2000

3000

4000

5000

6000

7000

0 0.5 1 1.5 2 2.5

True Strain

True S

tress

(psi)

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

m-va

lue

Ti-425Ti-6Al-4VTi-425 (m-value)Ti-6Al-4V (m-value)

T-425

Ti-6Al-4V

Super Plastic Forming Capability Super Plastic Forming Capability Graphs courtesy Battelle NWGraphs courtesy Battelle NW


T i - 2

T i - 1 2

T i - 9

A T I 4 2 5 ™

0

5

1 0

1 5

2 0

2 5

3 0

3 5

4 0

1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 3 5 0 4 0 0 4 5 0 5 0 0 5 5 0 6 0 0

T e m p e r a t u r e ( F )

Max

Allo

wab

le S

tres

s (k

si)

ASME Design Allowable Stresses for Ti AlloysASME Design Allowable Stresses for Ti Alloys


••SPF panels of SPF panels of welded ATI 425welded ATI 425™™Titanium 0.100” coldTitanium 0.100” cold--rolled sheetrolled sheet

••HiHi--Tech Welding, El Tech Welding, El Cajon, CACajon, CA

••Army Research Lab Army Research Lab Trailer ProjectTrailer Project

Super Plastic Forming Super Plastic Forming CapabilityCapability


Corrosion PropertiesCorrosion Properties

•• In between Ti 6AlIn between Ti 6Al--4V and Ti4V and Ti--3Al3Al--2.5V2.5V•• Evaluated in following media:Evaluated in following media:

40% Nitric 10540% Nitric 105°°C.C.10% Hydrochloric 10010% Hydrochloric 100°C.°C.100% Acetic 118°C.100% Acetic 118°C.100% Sulfuric 103°C.100% Sulfuric 103°C.100% Seawater 100°C.100% Seawater 100°C.UU--Bend Stress Corrosion CrackingBend Stress Corrosion Cracking

ATI 425ATI 425™™ TitaniumTitanium Sheet Sheet Coupons (UCoupons (U--Bend)Bend)Mining Liquor TestMining Liquor Test


Electrical Resistivity*Electrical Resistivity*•• ATI 425ATI 425™™ TitaniumTitanium 154 154 µµ--ohmohm•• CPCP 56 56 µµ--ohmohm•• Ti64Ti64 170 170 µµ--ohmohm

–– *courtesy Hamilton Precision*courtesy Hamilton Precision


Characterization of Titanium ATI 425Characterization of Titanium ATI 425™™ TitaniumTitanium Alloy sheet under SPF Alloy sheet under SPF ConditionsConditions

PNWDPNWD--35003500 Battelle Northwest LaboratoriesBattelle Northwest Laboratories••“The Ti“The Ti--425 alloy exhibited flow stress, elongations, and strain rate se425 alloy exhibited flow stress, elongations, and strain rate sensitivities nsitivities that are suitable for commercial SPF applications.”that are suitable for commercial SPF applications.”

••“The conventional Ti“The conventional Ti--6Al6Al--4V sheet materials are often formed at a temperature of 4V sheet materials are often formed at a temperature of 900900°°C. in commercial practice, and it appears that the TiC. in commercial practice, and it appears that the Ti--425 sheet will have 425 sheet will have similar performance during SPF at these conventional forming ratsimilar performance during SPF at these conventional forming rates and es and temperaturestemperatures””

••Characterization of Titanium TiCharacterization of Titanium Ti--425 Alloy Sheet under SPF Conditions425 Alloy Sheet under SPF Conditions

••Technical Report Prepared for Wah ChangTechnical Report Prepared for Wah Chang


Gun Pod Elevation Arm Gun Pod Elevation Arm Stryker VehicleStryker Vehicle

33” L X 7” X 7.5” 167#33” L X 7” X 7.5” 167#

YieldYield UltimateUltimate ElongationElongationKSIKSI KSIKSI %%

120.3120.3 134.7134.7 1212Cast PlateCast Plate120120 135135 15(“L” & “T”)15(“L” & “T”)

ATI 425ATI 425™™ TitaniumTitaniumRammed Graphite CastingRammed Graphite Casting

Cast Plate ~ 100XCast Plate ~ 100X


Mechanical Properties

0

20

40

60

80

100

120

140

160

180

-100 -50 -25 0 25 70100 200 300 400 500 600 700 800100

0120

0140

0150

0

Test Temperature deg. F.

Stre

gnth

(KSI

)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

Small Bar

Perc

ent

Ultimate Yield Elongation Reduction Area

ATI 425™ TitaniumATI 425™ Titanium


CompressiveYield (KSI) Yield Ultimate Elong.(%) Oxygen

Alloy Source Heat Gauge SFC Direction (KSI) (KSI) (KSI) (%) (ppm)Ti-6Al-4V Timet H0063 0.064 S8329 Long. 142.8 138 145 14 1700Ti-6Al-4V Timet H0063 0.064 S8329 Long. 143.1 136 145 14 1500Ti-6Al-4V Timet H0063 0.064 S8329 Long. 144.5Ti-425 WC K898 0.060 1294701 Long. 138.3 134.5 155.1 12 2400Ti-425 WC K898 0.060 1294701 Long. 139.1 135.0 155.7 14Ti-425 WC K898 0.060 1294701 Long. 137.0Ti-425 WC K898 0.060 1294701 Trans. 175.2 153.6 161.6 12Ti-425 WC K898 0.060 1294701 Trans. 167.4 155.9 163.6 13Ti-425 WC K898 0.060 1294701 Trans. 181.0Ti-425 WC K898 0.100 1294701 Long. 133.6 130.0 149.5 14 2400Ti-425 WC K898 0.100 1294701 Long. 136.0 129.6 149.2 15Ti-425 WC K898 0.100 1294701 Long. 134.9Ti-425 WC K898 0.100 1294701 Trans. 170.6 149.6 157.4 15Ti-425 WC K898 0.100 1294701 Trans. 168.6 149.8 158.0 16Ti-425 WC K898 0.100 1294701 Trans. 170.0Ti-425 WC RD175 0.085 N/A Long. 147.0 140.3 155.1 15 2900Ti-425 WC RD175 0.085 N/A Long. 145.7 2900Ti-425 WC RD175 0.085 N/A Long. 149.0

Tensile PropertiesATI 425ATI 425™™ Titanium Titanium Compressive Yield Data Compressive Yield Data ((StavelyStavely))


ATI 425™ TitaniumATI 425™ TitaniumCreep Rupture Data Creep Rupture Data ½”½” Plate Heat 797YPlate Heat 797Y

WestmorelandWestmorelandElongation

Test Temp. (°F) Stress (KSI) L/T Hours (%)600 90 Trans 1683 3.6 Broke600 95 Trans 1692 4.7 Broke600 95 Long 731 0.6 Discontinued600 100 Trans 0 0.0 Fail @ Load600 105 Long 0 0.0 Fail @ Load700 75 Long 6651 16.4 Broke700 80 Trans 1783 32.8 Broke700 85 Trans 620 14.3 Broke700 90 Trans 258 13.0 Broke700 90 Long 743 13.0 Broke700 95 Trans 14 9.6 Broke800 40 Long 3037 23.2 Broke800 45 Long 2005 26.6 Broke850 40 Trans 407 23.5 Running875 40 Trans 179 17.5 Broke900 40 Trans 51 17.8 Broke


ATI 425™ TitaniumATI 425™ TitaniumErichsen Cup Test per DIN 50 101 (RT)Erichsen Cup Test per DIN 50 101 (RT)

WMTRWMTR

Alloy Heat Lot Gauge mm InchTi425 797Y 1278929 0.050 4.3 0.1693

4.0 0.15755.4 0.21264.3 0.1693

Average 4.5 0.1772

Ti425 797Y 1267114 0.085 6.2 0.24415.8 0.22835.4 0.21265.7 0.2244

Average 5.8 0.2274

Ti64 HOU63 N/A 0.063 4.2 0.16544.4 0.17324.4 0.17325.0 0.1969

Average 4.5 0.1772

Draw Depth


ATI 425™ TitaniumATI 425™ TitaniumCompressive Yield Data Compressive Yield Data ((StaveleyStaveley))

147

175

135

170

138143135

155

130

150140137

1600

2400

2900

2400 2400 2400

0

50

100

150

200

250

300

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7

Yield

Stre

ngth

(ksi)

0

500

1000

1500

2000

2500

3000

Oxyg

en C

onte

nt (p

pm)

Compressive Yield Tensile Yield Oxygen Content

Ti 6Ti 6--440.064” Long0.064” Long

ATI 425 ™ATI 425 ™0.10” Trans0.10” Trans

ATI 425 ™ATI 425 ™0.06” Trans0.06” Trans

ATI 425 ™ATI 425 ™0.10”Long0.10”Long

ATI 425 ™ATI 425 ™0.085”Long0.085”Long

ATI 425 ™ATI 425 ™0.06”Long0.06”Long


ATI 425™ TitaniumATI 425™ TitaniumCreep Rupture Data Creep Rupture Data ½”½” Plate Heat 797Y Plate Heat 797Y WestmorelandWestmoreland

0

20

40

60

80

100

120

1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 4 0 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8

ksi o

r %

0

1000

2000

3000

4000

5000

6000

7000

hour

s

Stress (ksi) Elongation (%) Time to Failure (hours)

800L

850T

875T

900T

800L

700L

700T

700T

700L

600T

700T

600L

600T

700T

600T*broke on load*

600L


ATI 425™ TitaniumPin Bearing Test ASTM E238Pin Bearing Test ASTM E238

WestmorelandWestmoreland6 Lots, duplicate L & T coupons, 3 heats6 Lots, duplicate L & T coupons, 3 heats

Cold Rolled Sheet 6 gauges from 0.038” to 0.102”Cold Rolled Sheet 6 gauges from 0.038” to 0.102”

Pin Bearing Pin Bearing TensileTensileYieldYield UltimateUltimateYieldYield UltimateUltimate(KSI)(KSI) (KSI)(KSI) (KSI)(KSI) (KSI)(KSI)

Long AVGLong AVG 225.8 276.5225.8 276.5 122.6122.6 144.1144.1Trans AVGTrans AVG 236.7236.7 301.7301.7 141.9141.9 151.4151.4Long MINLong MIN 209.3209.3 259.6259.6 117.1117.1 137.0137.0Trans MINTrans MIN 220.9220.9 290.6290.6 130.4130.4 141.6141.6Long MAXLong MAX 241.4241.4 291.1291.1 135.4135.4 155.3155.3Trans MAXTrans MAX 270.6270.6 310.4310.4 156.5156.5 166.0166.0Long SDEVLong SDEV 11.011.0 8.68.6 6.66.6 6.36.3Trans SDEVTrans SDEV 18.218.2 6.16.1 9.99.9 9.99.9


Specific Heat of Ti-4Al-2.5V-1.5Fe-O Alloy

500520540560580600620640

0 20 40 60 80 100 120

Temperature, C

Spec

ific

Hea

t, J/

kg-K


Thermal Expansion of Ti-4Al-2.5V-1.5Fe-O Alloy

6

7

8

9

10

11

12

0 200 400 600 800 1000 1200

Temperature, C

Mea

n Th

erm

al E

xpan

sion

Co

effic

ient

, mm

/mm

x 1

0-6


Thermal Conductivity of Ti-4Al-2.5V-1.5Fe-O Alloy

7.0

7.5

8.0

8.5

9.0

9.5

10.0

0 20 40 60 80 100 120

Temperature, C

Ther

mal

Con

duct

ivity

, W/m

-K

ITA October 2006 - cdn.ymaws.com

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