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IS0
I N T ERN AT1 O NA L O RG A N I Z AT I O N FO R STA N DA R D IZ AT1 ON
I SO R ECO M M EN DATI O N
R 429
CLASSIFICATION OF COPPER-NICKEL ALLOYS
1st EDITION
March 1965
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 429, Classifcation of Copper-Nickel Alloys, was drawn up
by Technical Committee ISO/TC 26, Copper and Copper Alloys, the Secretariat of which is held
by the Deutscher Normenausschuss (DNA).
Work on this question by the Technical Committee began in 1960 and led, in 1962, to the
adoption of a Draft IS0 Recommendation.
In December 1962, this Draft IS0 Recommendation (No. 547) was circulated to all the
IS0 Member Bodies for enquiry. It was approved, subject to a few modifications of an editorial
nature, by the following Member Bodies :
Australia Germany Romania
Belgium Greece Spain
Brazil
India Sweden
Canada Iran Switzerland
Chile Italy Turkey
Denmark Japan United Kingdom
Finland Netherlands Yugoslavia
France
Poland
One Member Body opposed the approval of the Draft: U.S.S.R.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council,
which decided, in March 1965, to accept it as an IS0 RECOMMENDATION.
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ISO/R 429 - 1965 (E)
IS0 Recommendation R 429 March 1965
CLASSIFICATION OF COPPER-NICKEL ALLOYS
1. SCOPE
This IS0 Recommendation relates to the chemical composition and forms of semi-manufactured
products of the following wrought copper alloys :
Copper-nickel alloys,
currently available in commercial quantities.
It is intended as a classification and not as a specification for the various types. For the classi-
fication principles, see Appendix.
2. GENERAL
The chemical compositions given below show only the main constituent elements and usual
impurities. It is the responsibility of the supplier to ensure that any element not specifically
limited by this IS0 Recommendation is not present in an amount such as is generally accepted
as having an adverse effect on the product. If the purchaser's requirements necessitate limits
for any element not specified, these should be agreed upon between supplier and purchaser.
3. CHEMICAL COMPOSITION (PER-CENT)
TABLE 1
Aver-
Other
Maximum impurities
I I
age
ele-
den-
Designation Mn Cu ments
&-**
Sn +
Fe Pb Zn , S C Total g/dm:
I Ni I Fe
I I
-
l I
Cu Ni5 Fe1 Mn 0.3-0.8
4.0-6.0 0.9-1.5 0.05 0.3 0.05 0.05 0.1 8.90
Cu Nil0 Fe1 Mn 9.0-11.0 0.5-2.0 0.3-1.0
0.05 0.5 0.05 0.05 o. 1 8.90
Cu Ni20 19.0-22.0 -
0-0.5 0.05 0.2 0.05 0.05 0.1 8.95
Cu Ni20 Mnl Fe 19.0-22.0 0.4-1.0 0.5-1.5 0.05
0.5 0.05 0.05 o. 1 8.95
Cu Ni25 24.0-27.0 - 0-0.5 0.05 0.2 0.05 0.05
0.1 8.95
Cu Ni30 29.0-32.0 - 0-0.5 0.05
0.2 0.08 0.06 o. 1 8.95
Cu Ni30 Mnl Fe 29.0-32.0 0.4-1.0 0.5-1.5 0.05 0.5 0.08 0.06 8.90
0.2
Cu Ni44 Fe Mn
43.0-45.0 0-0.5 0-1 .O 0.02 0.2 0.0
...