SLOVENSKI STANDARD

SIST ISO 427:1995

01-november-1995

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Wrought copper-tin alloys -- Chemical composition and forms of wrought products

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Alliages cuivre-étain corroyés -- Composition chimique et formes des produits corroyés

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Ta slovenski standard je istoveten z: ISO 427:1983

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ICS:
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77.150.30 Bakreni izdelki Copper products

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SIST ISO 427:1995 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ISO 427:1995

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 SIST ISO 427:1995

International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDlZATION.MEIKJlYHAPO~HAR OPTAHH3AWlR fl0 CTAHJJAPTM3AlWl~RGANlSATlON INTERNATIONALE DE NORMALISATION

Wrought copper-tin alloys - Chemical composition

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Second edition - 1983-10-15
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UDC 669.351643 Ref. No. IS0 4274983 (E)

Descriptors : copper alloys, tin-containing alloys, bronzes, tin bronzes, chemical composition, wrought products.

Price based on 2 pages

 SIST ISO 427:1995

Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of developing International
Standards is carried out through IS0 technical committees. Every member body
interested in a subject for which a technical committee has been authorized has the
right to be represented on that committee. International organizations, governmental
and non-governmental, in liaison with ISO, also take part in the work.

Draft International Standards adopted by the technical committees are circulated to

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the member bodies for approval before their acceptance as International Standards by

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International Standard IS0 427 was developed by Technical Committee ISO/TC 26,
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Copper and copper alloys, and was circulated to the member bodies in
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November 1981.
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It has been approved by the member bodies of the following countries:

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Austria Germany, F. R. South Africa, Rep. of

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Belgium Hungary Spain

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Brazil Italy Sweden

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Bulgaria Japan Switzerland

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Canada Korea, Dem. P. Rep. of Turkey

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China
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Netherlands United Kingdom

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Czechoslovakia Norway USA

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Egypt, Arab Rep. of Poland USSR

Finland Romania

The member body of the following country expressed disapproval of the document on
technical grounds :

France

This second edition cancels and replaces the first edition (i.e. IS0 427-1973).

0 International Organization for Standardization, 1983

Printed in Switzerland
 SIST ISO 427:1995

INTERNATIONAL STANDARD IS0 427-1983 (E)

Wrought copper-tin alloys - Chemical composition

and forms of wrought products

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1 Scope and field of application IS0 6957, Wrought copper alloys - Strip for springs. 1)
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This International Standard specifies the chemical composition

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of wrought copper-tin alloys and lists the forms of wrought 3 Definitions

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products in which they are currently available in commercial

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quantities. For the purpose of this International Standard, the definitions

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given in IS0 197/l and IS0 197/3 apply.

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2 References
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4 Chemical composition
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IS0 197, Copper and copper alloys - Terms and definitions

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Part I: Materials. The chemical composition of the copper alloys is given in tables
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Part 3: Wrought products. 1 and 2. The composition limits do not preclude the possible
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presence of other elements not specified. If the purchaser’s re-

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IS0 1190/l, Copper and copper alloys - Code of designa- quirements necessitate limits for any other element not
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tion - Part I : Designation of materials. specified, these shall be agreed upon between the supplier and
the purchaser. Percentage content of elements shown as “re-
IS0 1634/l, Wrought copper and copper alloys - Mechanical mainder” is usually calculated by difference from 100 %.
properties - Part I: Plate, sheet and strip for general pur-
poses. 1) The designations used are in accordance with the principles laid
down in IS0 1190/l.
IS0 1635, Wrought copper and copper alloys - Round tubes
for general purposes - Mechanical properties. 1)
5 Forms of wrought products and mechanical
IS0 1637, Wrought copper and copper alloys - Rod and bar - properties
Mechanical properties. 2)
The forms of wrought products in which these copper alloys
IS0 1638, Wrought copper and copper alloys - Wire - are available are given in table 3. The mechanical properties for
Mechanical properties. 2) all forms of wrought products for which the symbol X is given,
are defined in the following International Standards :
IS0 430212, Plain bearings - Copper alloys - Part2: Wrought
copper alloys for solid plain bearings. IS0 1634/l, IS0 1635, IS0 1637, IS0 1638, IS0 6957.

1) At present at the stage of draft.

2) Under revision.

1
 SIST ISO 427:1995

IS0 427-1983 (E)

Table 1 - Copper-tin alloys

Chemical composition by mass, % Average

Designation Element I I I I density
cu ~ Fe Ni P Pb Sn Zn kg/dm3
I
- - - -
CuSn2 min. Rem. 0,Ol LO 9,9
max. 081 0,3 0,3 0,05 2,5 0,3
- - -
CuSn4 min. Rem. - 0,Ol 3,5 8,9
max. 081 083 084 0,05 4,5 0,3
- - -
CuSn5 min. Rem. - 0,Ol 4,5 9,9
max. 081 083 084 0,05 5,5 0,3

CuSn6 min. Rem. -

max. 081
min.
CuSn8 Rem. -
max.

CuSn8Pl)

1) Mainly for wear resistance applications, e.g. plain bearings according to IS0 4382/2.

Table 2 - Special copper-tin alloys

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Chemical composition by mass, %
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cu P Pb Sn Zn kg/dm3
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min. 3,o 180

CuSn4Zn2 Rem. - 8,9
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max. 081 0,3 - 0,05 5,o 3,o

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min. - 0,Ol
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CuSn4Pb4Zn3 Rem. - 8,9

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Table 3 - Forms of wrought products

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X- main manufactured forms.

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(Xl - forms manufactured in smaller quantities, for example in certain countries only or for special purposes.
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NOTE - Where no symbol is given, the form is not considered of importance for that type of copper alloy, but it does not necessarily indicate that
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such a product cannot be manufactured.

1 Designation
1 ;;;;‘r;I;lers 1 ;;;;;‘ji’,,-.,. j ;;8fi;,,denser / Rod8
bar1 wire j ;;,;;$; 1Forgings
1
1 Copper-tin alloys 1
1 CuSn2 1 I I (X) I I (X) I I (Xl I 00 I
CuSn4 (X) X X (X) (Xl w
CuSn5 (X) X X Pa X X
CuSn6 X X X (lo X X
CuSn8 X X X X X X
CuSn8P (X)2’ (X)2’ (X)2’
1 Special copper-tin alloys
CuSn4Zn2 X3’ X3)
CuSn4Pb4Zn3 X3) X3) X3’ 00
4 4
1) Made by extruding or by combination of extruding and drawing.
2) Mainly for wear resistance applications, e.g. plain bearings according to IS0 4382/2.
3) Mechanical properties to be defined later, i.e. in course of revision of IS0 1634/l and IS0 1635.