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/--- - IS0
STAND A RD I ZATl O N
I N T ERN AT I O N A L ORGAN I ZAT 1 ON FOR
IS0 RECOMMENDATION
R 430
CLASSIFICATION OF COPPER-NICKEL-ZINC 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 430, Classification of Copper-Nickel- Zinc 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 1961 and led, in 1962, to the
adoption of a Draft Recommendation.
In December 1962, this Draft IS0 Recommendation (No. 548) 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
India Sweden
Brazil
Iran Switzerland
Canada
Italy Turkey
Chile
Denmark Japan Yugoslavia
Finland Netherlands
France Poland
One Member Body opposed the approval of the Draft: United Kingdom.
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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I
ISO/R 430 - 1965 (E)
IS0 Recommendation R 430 March 1965
CLASSIFICATION OF COPPER-NICKEL-ZINC 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-zinc 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
Maximum impurities
Aver-
Other age
Ni Mn Pb
r- Designation
eie- den-
ments sity*
Total kg/dm
60.0-64.0 17.0-19.0 0-0.7 - The 0.3 0.03 1 0.1 8.75
Cu Ni18 Zn20
Cu Ni18 Zn27 53.0-56.0 17.0-19.0 0-0.5 - re- 0.3 0.03 0.1 8.70
Cu Ni12 Zn24 62.0-66.0 11.0-13.0 0-0.5 - main- 0.3 0.05 0.1 8.65
Cu NilO Zn27 61.0-65.0 8.0-1 1 .O 0-0.7 - der 0.3 1 0.05 0.1 8.60
I I I 1 , 1 I
Cu Ni 18 Zn 19 Pb 17.0-19.0 0-0.7 0.3 -
59.0-63.0 0.3-1.5 The 0.1 8.80
remain-
Cu NilO Zn45 44.0-48.0 8.0-11.0 0-0.5 0.5 - 0.5 8.45
0-2.5 der
*
...