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STANDARDS

ASSOCIATION

OF

AUSTRALIA

The StandardsAssociation of Australiawas founded in 1922

as the Australian Commonwealth Engineering Standards

Association,

and was

incorporated

by

Royal Charter

in 1950.

Theprincipal function of the Association is to prepare

and publish Australian Standards and to promote their

adoption. Standards

are

m

the

form

of

specifications

for

materials

and

products, codes

of

sound

or safe

practice,

methods of testing, nomenclature, etc. They are prepared

by

representative committees which

co-ordinate

manufac-

turing capacity

and

production efficiency with

the

users'

reasonable needs. They seek to achieve fitness for purpose,

simplified production and distribution, replacement inter-

changeability, and adequate variety of choice without

wastefuldiversity.

Australian Standards are prepared only after a

full

enquiryhas shown that the project

is

endorsed as a desirable

one and worth the effort involved. The work is based on

voluntary agreement, and recognition of the community of

interest of producerand consumer.

The Association's work

is

conducted solely

in the

national interest and withoutprofit, the only expenses being

salaries, printing

and

office

administration.

It is

financed

from grants received from the Government, subscriptions

from

members,

and

sales

of its

publications. Government

and private enterprise both benefit from the Association's

activities,

to the financing of

which both should contribute

equitably.

Membership

of the

Association

is

open

to

individuals,

associations, industrial

and

commercial companies,

and

public and local authorities. Enquiries concerning member-

ship are always welcomed.

AS1472 1979

UDC

669 14 018 27 426 621 272

Australian Standard

14721979

CARBONSTEELSPRING

WIRE FORMECHANICAL

SPRINGS

[Titleallocated byDefenceCataloguing

Authority

METAL

ROD

WIRE NON-ELECTRICAL For

Mechanical

Springs)]

ST ND RDS SSOC I T ION O F USTR L I

Incorpcraicd

by Qoya /

Char sr


2/10

TH E FOLLOWING

SCIENTIFIC

INDUSTRIAL

AN D G OV ERN M EN TA L

organizationsanddepartments were officially representedon thecommittee

entrusted with

the

preparation

of

this

standard:

Australian Council

of

Furniture Manufacturers

Bureau

ofSteel Manufacturersof Australia

Confederation ofAustralian Industry

Department

of

Defence

Department ofProductivity

Instituteof Steel Service CentresofAustralia

MetalTrades Industry Association ofAustralia

Railways

ofAustralia Committee

SocietyofAutomotive Engineers Australasia

Spring Manufacturers Association of Australia

AUSTRALIAN STANDARD

This standard preparedbyCommitteeM T / 1 , IronandSteel,wasapproved

on behalf of the Council of the Standards Association of Australia on

29

March 1979

and was

published

on 1

July 1979.

To

keep abreast

of

progress

in

industry Australian standards

are

regularly

reviewed Suggestions fo r improvementsto published standards

addressed to the head

office

of the Association arewelcomed.

f

This

st nd rd

\\as

issued in

draft

form fo r public review as DR 78023

CARBON

STEEL SPRING

WIRE FORMECHANICAL

SPRINGS

AS

14721979

First

published 1973

Revised 1979

PUBLISHEDBY TH ESTANDARDS ASSOCIATIONOF AUSTRALIA

STANDARDS HOUSE

80 ARTH UR ST ,

NORTH SYDNEY N.S.W.

I S B N 0726201960


3/10

IS

1472-1979

PREFACE

This standard

was

prepared under the direction

of the Association's

Committee on Iron and Steel by its subcommittee on steel spring

wire

as a

revision of AS

14721973.

Itapplies,in particular, touncoatedcarbon steel

springwire

of round

cross-section,

supplied in

coils

in the hard-drawn, oil-

hardened and tempered, or soft-drawn

condition,

for use in mechanical

springs,

but

excluding

thosefor

bedding

and

seating, which

are

covered

in

AS 2266, CarbonSteelSpring

Wire

for Bedding andSeating.

It should be noted

tnat

although hard-drawn

wire

is supplied in the

uncoated condition to this standard, metallic or other coatings are available,

but these are subject to

negotation

between the supplier and the purchaser

(see Appendix A). Also, the standard is restricted

to

carbon steel

wire

only,

since many requirements for alloy steel spring

wirediffer

to such an extent as

to make its inclusion impracticable.

In

this revision,

thetorsion

testand reverse bend test are non-mandatory,

since it was considered by the subcommittee that the tensile

test

and

wrap

test

would cover

requirements

adequately. Appendix

A, a new

addition

to the

standard, presents purchasing guidelines, including contractual require-

ments, previously included in the body of the standard, and directs attention

to matters requiring consideration at the time of enquiry and/or order. The

intention is to avoid misinterpretation or other problems and to ensure a clear

understanding of product requirements by both purchaser and supplier.

In

the preparation of this standard, cognizance was taken of BS 5216,

Patented Cold Drawn CarbonSteel

Wire

for Mechanical Springs.

This standard requires reference to the following standards and

publications:

AS 1050 Methods

for

the Analysis of Iron and Steel (Metric Units)

AS

1153 Preferred

Metric Sizes of Ferrous and Non-ferrous

Round

Wirefor

General Engineering Purposes

.AS

1213 Methods for the Sampling of Iron,

Steel,

Permanent

Magnet AlloysandFerro alloys

AS K 1 Methods

for

the Sampling and Analysis of Iron and Steel

SAA MP19 Report on Preferred Numbers and Their Use

ISO/R 388 ISO

Metric Series

for

Basic Thicknesses

of

Sheet

and

Diameters of

Wire

BS4545

Methods for Mechanical Testing of SteelWire

Copyright

STANDARDS

ASSOCIATION OF AUSTRALIA 1979

Users

of

standard

are

reminded that

copyright

subsists

in

all SAA

publications.

Noput

of

this publication may be reproduced, stored in a retrieval system inany formor transmitted

by any

means

without

prior

permission in

writing

of the Standards

Association

of

Australia.

AS 14721979

CONTENTS

Pag e

S P E C I F I C A T I O N

1 Scope

4

2

Definitions

4

3

Steelmaking Process ....

4

4

Chemical

Composition 5

5

Freedom

from

Defects

6

6

Manufacturing Tolerances

6

7

Mechanical Properties

6

8 Cast 6

9 Selectionand Preparation of Test Samples for Mechanical

Tests 7

10

Tensile Strength 7

11 Wrap

Testfor

Hard-drawnWire 10

12 Torsion Test

10

13

Retests

10

14

Identification

10

15

Rounding

of

Numbers

10

APPENDICES

A Purchasing Guidelines 11

B

Rounding

of

Numbers

IS


4/10

AS 14721979

STANDARDS

ASSOCIATION

OF

AUSTRALIA

Australian Standard

for

CARBON STEEL

SPRING

WIRE FORMECHANICAL

SPRINGS

1

SCOPE. This standard specifies requirementsfor

uncoated

carbon steel

spring wire

of

round

cross-sectionfor

mechanical springs, supplied

incoils

in one of the

following

conditions:

(a)

Hard-drawn.

(b) Oil-hardened and

tempered.

(c)

Soft-drawn.

NOTE:Guidelines

to

purchasers

on

requirementsthatmust

be

specified

by the

purchaser

and

those

that must

or

may

be agreed at

the

time

of

enquiry

and/or

order are given in Appendix A.

2 DEFINITIONS. For the

purpose

of

this standard,

the

following

definitions apply:

Herd drawn

carbon

steel wire drawn with a relatively

high

reduction of

cross-sectional

area from

a heat-treated

(patented

or

similar process)

base.The

microstructure

ofsuch materialconsistsofheavily elongated

pearlite.

Oil hardenedand

temperedcarbon

steel wirecontinuously hardened by

quenching

in oil

followed

by

tempering.

The microstructure of

such

material

consists

of temperedmartensite.

Soft drawn

wire drawn with a reduction of area of about 10 percent

from

an

annealed base,

to

produce

a

lightly elongated structure containing

spheroidal

cementite.

Castike formtaken by the individual waps (turns or circles) of awireina

coil.

NOTES:

One of thecharacteristics of

cast

is the wap

diameter, this should

be uniform and will

normally

be

about

the

coildiameter,

which

approximates

the

blockdiameter.

2

Asecondcharacteristicis thetendencyof the

wire

to spiral; thisshouldbeuniformbetween

one wap andanother,but is

normally

preferred

approachingzero.

3 STEELMAKING

PROCESS.

The

steel shall

be

made

by an

open

hearth, a basic oxygen or an electric process. For the purpose of this standard,

blown with commercially

pure

oxygen.

AS

14721979

4

CHEMICAL COMPOSITION.

4.1

General.

The

method

of

sampling

for

chemical analysis shall

be in

accordance

with AS

1213.

Chemical

composition

shall be determined by any

of the

procedures commonly used, such

as

emission

spectroscopy,

X-ray

spectroscopy, flame atomic absorption spectroscopy, combustion techniques

or

classical volumetric

or

gravimetric methods (see also Paragraph A7.3

of

Appendix A).

4.2

Ladle Analysis.

4.2.1 Hard drawn steel spring wire. The chemical

composition

of

the steel shall be based on ladleanalysis,and shall be within the limits given

in

Tabk

1.

TABLE 1

CHEMICAL REQUIREMENTS OF

HARD-DRAWN

STEEL SPRING

WIRE

Element

Carbon

Silicon

Manganese

Phosphorus

Sulphur

1

L4fc

analysis,

perce*

Mm.

0.4S

0.10

0.40

Max.

0.85

0.35

1.10

0.050

0.050

4.2.2 Oi l hardened and

tempered

steel spring wire. The chemical

composition

of the steel shall be based on ladle analysis, and shall be within

the limits given

in

Table

2.

NOTE:

T hechoiceof chemicalcompositionis at theoptionof the

m anufacturer,

except

that

if the purchaser

requires

a

specific

compositionthis is to be

specified

at the time of

enquiry and/or order

(seeParagraph A3.1 ofAppendixA) and

stated

on the order.

TABLE2

CHEMICAL REQUIREMENTS

OF OIL-HARDENED AND

TEMPERED STEEL SPRINGWIRE

Element

Carbon

Silicon

Manganese*

Phosphorus

Sulphur

1

Ladle

analysis,percent

Mfa.

0.55

0.10

0.60

Max.

0.85

0.35

1.20

0.050

0.050

Generally 0.80/1.20 percent manganesefordiameter 4.88mm and larger, 0.60/0.90 tor

diameters

less than 4.88

mm.


5/10

AS

1472-1979

6

4.2 Soft drawn

steelspring wire.

The chemical compositionof the

steel shallbe based on ladleanalysis,and shall be within the limits given in

Table 3.

NOTE:

Th e

choice

ofchemical

composition

s at the

option

of the

m anufacturer,

except

that

if the

purchaser requires

a

specific

compositionthis is to be

specified

at the time of

enquiry

and'or

order

(seeParagraph

A3.1

of Appendix A) andstatedon the order.

TABLE3

CHEMICALREQUIREMENTS FOR SOFT-DRAWN STEEL

SPRING WIRE

AS 14721979

Element

Carbon

Silicon

Manganese*

Phosphorus

Sulphur

1

Ladleanalysis,percent

Mm.

0.65

0.10

0.60

Max.

0.75

0.35

;20

0.050

0.050

Generally

0.80/1.20 percent manganese

for diameter 4.88 mm and larger;

0.60/0.90

for

diameters

less

tnan

4.88 mm .

5 FREEDOM FROM DEFECTS. The

wire

shall be clean, smooth and

free from

defects detrimentalto its subsequent processingand enduse.

Notwithstanding the fact that a coil has been passed as complying with

this

standard,

if

faults

in

manufacture

are revealed

during subsequent

processing of the coil, it may them be deemed not to comply.

6 MANUFACTURING TOLERANCES.

6.1 Diameter. The diameter tolerances shall be in accordance with

Table 4.

6.2

Out-of-roundness.

The deviation from roundness at any cross-

section

measured as the difference between the maximum and minimum

diameters shall

not

exceed one-half

of the

diameter tolerance

specified.

7 MECHANICAL PROPERTIES. The mechanical properties shall be

determined on test pieces prepared

from

samples

selected

and prepared as

specified

in

Clause

9, and

shall comply with Clauses 10

and

11 ,

as

appropriate.

8 CAST. The wire shall be uniformly cast such that when a few

convolutions ofwireare cutfromthecoilandallowedtofall

on

aflatsurface,

thewire shall lie flat on

itself,

orshallnotspringup andshowacorkscrew

condition.

TABLE4

DIAMETER TOLERANCES

4.1 ClassATolerances.

1

2

Specifieddiameter

Over

0.80

2.80

8.0

Up

to

at

fed.

0.80

2.80

8.0

11.2

3

Irfamctcr tnJUMii

0.01

0.02

0.03

0.04

4.2

Class

B

Tolerance*.

1

2

Over

0.36

0.80

1.60

2.80

5.0

8.0

Up

to*fed.

0.56

0.80

1.60

2.80

5.0

8.0

11.2

3

.

0.01

0.02

0.03

0.04

0.05

0.06

0.08

9 SELECTION AND PREPARATION OF TEST SAMPLES FOR

MECHANICAL

TESTS.

A sample of sufficient length to allow the

preparation of the necessary test piecesshall be cut from each

coil

of wire.

The test samples shall not, except

for the

necessary straightening,

be

mechanically workedorheat-treated before

testing.

10 TENSILE STRENGTH. The tensile strength shall be determined in

accordancewithBS 4S4S, and shall comply with the following requirements:

(a) Hard drawn steelspring wire

within

the

limits given

in

Table

5.

(b)

Oil hardened

and tempered

steel

spring

wire

withinthelimits givenin

Table 6.

(c) Soft drawn steel spring wiremaximum of 930 MPa for all

sizes.

NOTE:If the

purchaser requires

an

alternative

maximum,

this

is to be

subject

to

agree-

ment between the purchaser and the

supplier

at the time of enquiry rMl ororder(see

Paragraph A3.2 a) of Appendix A).


6/10

AS 14721979

AS1472-1979

TABLES

TENSILE STRENGTH REQUIREMENTS FOR HARD-DRAWN

STEEL

SPRINGWIRE

Specified

dfauMter

Up to0 56

0.63

0.71

0.80

0.90

1.00

1 12

1.25

1.40

1.60

1.80

2.00

2.24

2.50

2.80

3.15

3.55

4.0

4.5

5.0

5.6

6.3

7 1

8.0

9.0

10.0

11 2

2

1

5|

7

TcMflc

ftrenftk

+,MPa}

RMf l

Mta.

1960

1930

1900

1870

1840

1800

1770

1730

1700

1670

1630

1600

1560

1530

1500

1460

1450

1410

1370

1350

1320

1290

1260

1230

1190

1180

1170

MM

2250

2220

2190

2160

2130

2070

2040

2000

1960

1920

1880

1840

1800

1760

1720

1680

1670

1630

1590

1560

1520

1490

1460

1420

1380

1360

1340

RaaseZ

Mte.

2220

2190

2160

2130

2100

2040

2010

1970

1930

1890

1850

1810

1770

1730

1690

1650

1640

1600

1560

1530

1490

1460

1430

1390

1350

1330

1310

MM

2490

2460

2430

2400

2370

2310

2270

2230

2180

2130

2080

2040

2000

1950

1910

1870

1850

1810

1760

1730

1680

1650

1620

1570

1530

1510

1480

Rante3

Mia.

2460

2430

2400

2370

2340

2280

2240

2200

2150

2100

2050

2010

1970

1920

1880

1840

1820

1780

1730

1700

1650

1620

1590

1540

1500

1480

1450

Max.

2780

2750

2710

2680

2640

2570

2530

2480

2430

2370

2320

2270

2230

2170

2120

2080

2060

2010

1960

1920

1860

1830

1790

1740

1700

1670

1640

TABLE 6

TENSILE STRENGTH REQUIREMENTS FOR OIL-HARDENED

AND

TEMPERED STEEL SPRINGWIRE

In accordance

with

AS 1153.

+Temik

strength values for intermediate diameters may be obtained by interpolation.

*1 MPa = 1N/mm2.

1

Specified

dimeter

Hi

0.80

0.90

1.00

12

.25

.40

.60

.80

2.00

2.24

2.50

2.80

3.15

3.55

4.0

4.5

5.0

5.6

6.3

7 1

8.0

9.0

10.0

11 2

2

TcMflei

Ml

Mfa.

1940

1890

1860

1810

1780

1740

1700

1670

1620

1600

1570

1540

1 51 0

1470

1420

1380

1330

1300

1280

1270

1260

1250

1230

1200

3

s r -

Mas

2150

2100

2070

2020

1990

1950

1910

1880

1830

1810

1780

1750

1720

1640

1590

1550

1500

1470

1450

1440

1430

1420

1400

1370

*

: ,

-)

a

*In

accordance

with AS 1153.

Tensile

strength

values for intermediate diameters may be obtained byinterpolation.

*1

M P a =

2

1


7/10

AS

14721979

10

11 WRAPTEST.

11.1 Hard-drawn Wire.

11.1.1

Ranges1and 2 Wiresin ranges

1 and 2

(see Table

5 )

shall

be

capable of being wrapped at least fourturns around its own diameter without

fracture.

11.1.2 Range3 Wirein range 3(see Table5) shallbecapableofbeing

wrapped at leastfour turns around a mandrel of twice its own diameter

without fracture.

11.2 Oil-hardened andTemperedW ire.

11.2.1 Wi re

up to and

including

4 mm in

diameter The wire

shall

be

capable of being wrapped around itself as a mandrel without breakage

11.2.2

Wi re over 4 mm in diameter The wire shall be capable of being

wrapped around a mandrel of twice its own diameter without breakage.

12 TORSION TEST.

Where required (see Notes), the torsion test shall be

carried

out in

accordance

with

BS

4545

on a

test piece whose length shall

be

equivalent

to 100

times

the

wire diameter

NOTES:

If the purchaser requires a torsion test, this

is

to besubjectto agreement between the

purchaser

and the

supplier

at the

time

of

enquin

and or

order(see Paragraph

A3

2(b)

of

Appendix

A)

2. The limits of

acceptance

are to be subject to agreement between the purchaser and the

supplier at the tune ofenquiry and ororder (see ParagraphA3

2 b)

ofAppendix A)

Guidelines in

this

regard

are

given

in

Paragraph

A7 2 of

Appendix

A

13

RETESTS.

Should any test piece

first

selectedfailto pass the relevant

test specified in Clauses 8, 10, 11and 12, the following procedure shall be

adoptedat the

option

of the

supplier:

Two further samples, onefrom each end of the same coil, shall be selected

fortesting.

Should the test pieces

from

both these additional samples pass,

the

coilshall

be deemed to comply with this

standard.

Should the test pieces

from

either

of

these additional samples

fail,the coil

shall

be

deemed

not to

comply with this standard.

14

IDENTIFICATION.

Each coil shall be marked or tagged to enableit

to be identified with this standard.

NOTE. Warning

is

given that the presence of the Australian standard number, AS 1472, on the

coil,it spackaging

or

literature related thereto could

be

taken

as a

claim

by the

manufacturer

that thecoil somarked complies

in

all respects with

this

standard

15 ROUNDING OFNUMBERS.

15.1 General.

For thepurposeofdeciding whetheraparticular require-

ment of thisstandard iscompliedwith, the determined value, observed or

calculated, shallbe roundedoff

in

accordancewith AppendixB. The number

of

significant places retainedin

this rounded-off

value shall

be the

same

as

that of the specified value in thisstandard.

15.2 Tensile Properties.

Th e

determined

value of

tensile strength shall

berounded off to the nearest

10

MP a

AS1472W79

A P P E N D I XA

PURCHASING GUIDELINES

Al GENERAL. Australian standards are intended to include the

technical provisions necessary for the supply of the material referred to in the

particular standard,

but do not

purport

to

comprise

all the

necessary

provisionsof acontract In anumberofcasesthepurchaser is either askedto

statehisrequirementsorgivenachoiceofoptional requirements,andthese

arecontractual matters to beagreed upon betweenthepurchaser and the

manufacturer.

This Appendix contains detailed explanation, adviceand recommend-

ations on the information to be supplied by the purchaser at the time of

enquiryand/or

order

Itaims at avoiding misunderstanding of the product requirements and

should result

in the

purchaser'sreceiving satisfactory material

and

service.

A2

INTENDED

USELIAISON

WITH

TH EM ANUFACTURER. It

is recommended that before ordering and setting up for production, the

purchaser consults with

the

manufacturer regarding

his

requirements.

This

enables

the

manufacturer

to

supply material suitable

for the

intended

purpose, as hisexperience canoftenassistthepurchaserinthis regard.

A3 INFORMATION TO BESUPPLIED B Y TH EPURCHASER.

A3.1 General Requirements. The purchaser should supply the

followinginformation at the time of enquiryand/ororderaftermaking due

reference

to the

detailed explanation, advice

and

recommendations contained

inthis A ppendix-

(a) Quantity (mass) and delivery instructions (see Paragraph A4).

(b) Whether a specific chemical composition (ladle analysis) is required for

oil-hardened

and

tempered steelspring wire

or

soft-drawn steel spring

wire(see Clause 4.2.2 or 4.2.3 respectively).

(c)

Diameter of

wire

and class of tolerance (see Paragraph A5).

(d)

Condition and tensile range, as appropriate (see Clause 10).

(e)

Any limitations in regard to coil mass and dimensions (see Paragraph

A 6).

(f) Whether a certificate covering chemical analysis (ladle analysis),

mechanical

properties, etc,

is

required (see Paragraph A9).

(g)

Whether

it is the

intention

of the

purchaser

to

inspect

thewireat the

manufacturer s works(see Paragraph

A10)

(h) A ny

information concerning processing

or end use

that

th e

purchaser

considerswould assist the m anufacturer(see Paragraph A2).


8/10

AS 14721979

12

A3.2 Special Requirements. The following requirements must be

agreed upon

by the

purchaser

and the

manufacturer

at the

time

of

enquiry

and/or

order:

(a)

Whether

an

alternative maximum tensile strength

for soft-drawn

steel

spring wireisrequired (see Notetoitem(c) ofClause 10).

(b) Whether a torsion test

is

required (see Clause

12)

and limits of accept-

ance (see Paragraph A7.2).

(c) Whether

special

finishing, packingorhandlingisrequired (see Preface

and Paragraph A8).

(d) Other special or supplementary requirements.

A 4 QUANTITY

AND

DELIVERY INSTRUCTIONS.

The

purchaser

should statethequantity

(in

tonnes),

with

deliverydates

and schedules, and

the

delivery

point.

A S

DIMENSIONS. Specific diameters listed

in

Tables4,

5and 6

herein

are in accordance withAS 1153. It should be notedthatgauge systems will

disappear with

the

changeover

to

International System (SI) units,

and

diameters will

be

specified

in

terms

of

whole numbers

and/or

decimals

of

millimetres.

The

series

of

wire diameters specified

follow

a rounded-off

series

of

numbers known as 'preferred

numbers'

or

'Renard'

(R) numbers which have

been

adopted

internationally

and

included

in

ISO/

R 388oftheInternational

Organization for Standardization (ISO). TheR20series has been adopted in

this standard

and it is

recommended that

if

intermediate diametersare

required, preference should be given to theR40senesof preferred diameters

(see AppendixA of AS 1153 and SAA MP19).

A 6

LIMITATIONS. The purchaser should ensure

that

his equipment can

handle

the

coils ordered,

andifany

limitations exist

in

respect

ofcoil

mass

or

dimensions, this should be stated at the time of enquiry and/or order.

A7 TEST REQUIREMENTS.

A7.1

Facilities

for Testing. Normally manufacturers provide and

prepare thenecessary samples,andsupply labour andappliancesfor any

testing required to ensure compliance with this standard and for any special

testing required by the purchaser.

Matenal for testing remains the property of the manufacturer unless

otherwise agreed.

A7.2

Torsion Test (See Clause

12).

The torsion test isan optional

test,

subject to

negotiation between

the

purchaser

and the

manufacturer

at the

time of

enquiry

and/or

order.

TableA 1 may beusedas thebasisfornegotiation

in

thedeterminationof

acceptance limits.

13

AS

1472-1979

TABLEAl

TORSIONTESTREQUIREMENTS

2

Specified diameter

From

0.56

0.71

1.01

1.51

2.01

301

401

601

Upto and incl.

055

070

10 0

150

200

300

400

600

800

3 4

5

Minimum

number of

torsions

without fracture

Rantel

28

27

26

25

24

23

22

21

20

Rant*

2

23

22

21

20

19

18

17

16

15

Ranges

18

17

16

15

14

13

12

11

10

A7.3 IndependentTests. In the event of a dispute as to the compliance

ofthe

wire

withthe requirements of thisstandard,the purchaser and the

manufacturer

should agree

to

have

the

wire tested

by an

independent testing

authority, whose results shouldbeacceptedasfinal.

Facilities

for

such testing

areafforded by

laboratories registered

by the

National Association of Testing Authonties, Australia, and should be

considered.

Themethodsof sampling for analysisand themethodsof analysis should

not beless accurate thanthe following

A S 1050 Methodsfor the A nalysis of Ironan d Steel (Metric Units)

A S 1213 Methods for the

Sampling

of Iron, Steel, Permanent

MagnetAlloysand Ferro-alloys

A S

K l

Methodsfor theSamplingand A nalysis of Iron and Steel

A8 SPECIAL FINISHING , PACKING OR HANDLING REQUIRE-

MENTS.

A8.1 Special Finishing. Metallic or other coatingsare avilable, but

thesea re subject to

agreement

between the purchaserand the

manufacturer

at the time of

enquiry an d

/or order

A8.2

Special Handling Requirements. The purchaser should indicate

at the time ofenquiry a nd / o rorderwhether any specialpackingor trans-

portation is required

A 9 TESTC E R T IF IC A T E . Where

requested

by the p urchaser at thet ime

of

enquiry and /or order,the manufacturer

will provide

a certificate showing

theresultsoftests earnedout for the purposeof establishing compliance

with

this

standard,an d thereis no

need

or

provision

for a separatecertificate of

compliance. It should be notedthat the chemicalcomp osition of the steelis

based on ladle

analysis


9/10

AS

1472-1979

14

A1 0

INSPECTION. Inspection at the

manufacturer's

works may be a

statutory requirement or may be considered desirable for a first run of

material, but is usually not otherwise requested, since the purchaser may

reject

wire

if

faults

are

revealed

in

subsequent processing (see Clause

5).

If it is the

purchaser's

intention to undertake any of the following

functions

at the manufacturer's works,

this

should be notified at the time of

enquiry and/ or

order,

and

should

be

accomplished

in a

manner which

will not

interfere withtheoperationof theworks:

(a)

Inspecting

the

wire

(b)

Selecting and identifying the test samples.

(c) Witnessing

the

tests being made.

The

manufacturer should afford

the

purchaser

all

reasonable facilities

to satisfy

himself that

the

wire

is in

accordance

with the

standard.

15

AS1472-1979

APPENDIX

B

ROUNDING OFN UMBERS

Bl

ROUNDING

OFF.

off

numbers:

The

following

procedure istobe

used

in rounding

(i) Choose the rounding (up or down) whicheveris thenearer. In

general

this will

be

evident.

(ii) If,

despite

the use of all the

figureswhich

can be

obtained

from the

data,the

figures

to bediscardedfallexactly betweentwoalternative

prospective

round values,

and

thereis

no

evidence

to

indicate

in

whichdirection

to

round, choose

the

even round value. This rule

appliesto both positive and negative values.

Rounding off

should

be

earned

out in one

operation.

If a

value, e.g.

of

99.253percent, is to be roundedoffto one place

of

decimals, thefiguresin the

second and third decimal places should be considered together, the rounded-

off

value being 99.3 percent.

If

rounding

off is

carried

out in two

operations

and

incorrectfigure

may be

obtained

in the

last place, e.g.

if

99.253 percent is

rounded

off in two

operations,

it

first becomes 99.25 percent

and

then 99.2

percent.

Wherethefigurenext beyond the lastfigureor placetobe retained is 5, or

a 5

followed only

by

zeros,

the

figure

in the

last place

retained

shall

be

(a)

increased

by one if it is

odd,

and

(b)

left

unchanged ifeven.

NOTE Zero would be regarded as an even number for

this purpose.

A s

examples

of the

aboverule

0.0505isroundedoff to 0.050

0.15

is

roundedoff to 0.2

10.5

isrounded off to 10

99.84

is

rounded

off to

99.8

99.85isroundedoff to99.8

99851 isroundedoff to99.9

99.86isroundedoff to99.9

B2

M EANI NG

TO BE

ATTACHED

TO NUMERICAL VALUES OF

M A X I M A

AND MIN IMA .

The

interpretation

to be placed on the

maxima and

minima given

in

this standard

for

chemical composition

and

mechanicalpropertiesis to be in accordance

with

the following examples


10/10

AS 14721979

16

value

xta

or UoUtor

raafe

16

15

16.0

15.0

16.00

15.00

14.7

32

33

320

33.0

32.00

3300

15.5and over

Over145

15.95

and over

14.95 and over

15.995 and over

14995 and

over

Over

14.65

Up to and incL32.5

Under 33.5

Up

to and

ind.

32.05

Upto andind.33 05

Up

to and incl.

32.005

Up

to and incl. 33

005

The figure

in

the last place retained

is

odd

(5)

and it is therefore

increased by one.

The figureinthe

last place retained

is even (4) and

itis

therefore

left unchanged.

The figure in the last place retained

is

odd (9) and it is therefore

increased

by

one.


is even (6) and it is therefore

left

unchanged.

The figure

in

the last place retained

is even (2) and it is therefore left

unchanged.


is odd (3) and

it

is therefore

increased by one.


is even (0) and it is therefore left

unchanged.

B3 REFERENCES.

BS

1957

Presentation of Numerical Values

(Fineness

of

expression;Rounding

of

Numbers)

BS 2846 Guide

to

Statistical Interpretation

ofData

ASTM

29

Designating Significant Places

in

Specified Limiting

Values

IS.2 Indian Standard Rules for Rounding Off Numerical

Values

PUBLICATIONS

OF

THE

ASSOCIATION

A

list ofAustralianStandards

may be

purchased

or inspected at

a ny office of the Association.

OFFICESOF

THEASSOCIATION

Thoseinterested inthe work of theAssociationare invitedtocall

at

the HeadOfficeor

any

Branch Office,

or

write

for

literature

NE W SOUTH WALES

HeadOffice StandardsHouse,80 ArthurStreet,North Sydney.

W.I.

Stewart, Director

Mail. P O. Box 458, North Sydney, 2060.

Telegrams: Austandard North Sydney.

Telex 26514.

Newcastle BranchOffice:HowardSouthChambers,WattStreet, Newcastle

2300(G A. Jeffries,Manager)

VICTORIA:

Chimes Ross House,

191

Royal Parade,

Parkville.

3052

C.R.Johnson,AssistantDirector,Victoria.)

Telex 33877.

QUEENSLAND 447 Upper Edward Street, Brisbane.4000

(R.T

Gillespie,

Manager)

SOUTH AUSTRALIA: Bagot Street, North Adelaide 5006

E J

SeUeck,

Manager)

WESTERN

AUSTRALIA:

11-13Lucknow

Place, West

Perth.

6005

(P J Oliver,

Manager

)

TASMANIA 4thFloor,18Elizabeth Street,

Hobart.

7000

(Mrs

G M

Lewer,

Manager)

NO RT H ERN

T E R R IT O R Y - 191

Stuart Highway, Darwin 5790

(Agency: MasterBuildersAssociation)

Sydney 9296022

Melbourne.

3 4 77911

Brisbane

2218605

TelephoneNos

{

Adelaide. 2 6 7175 7

Perth.

3 2 1776 3

Hobart. 346811

Newcastle

2

2477

Darwin. 819666

NOTE-

The

following

and all

other overseas standards

are

obtainableat or

may be

ordered through all offices of the Association

British

Standards

Institution

General Standards

Aerospace, Automobile, Marine Standards

Ministry

ofDefence

DT.D Specifications

Standards Association of New Zealand

SouthAfricanBureau of Standards

Indian Standards Institution

Pakistan Standards Institution

Standards

Council

of

Canada

Standards Institution ofM alaysia

Singapore Instituteof Standards and tadwtrisJ Research

American

National StandardsInstitute

JapaneseIndustrialStandards Committee

International Organization for

Standardization

International Ekxtrotechmcal

Comir~

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