Copper-Nickel Alloy Standards

Contents

Product Forms

Typical international and national standards for ordering wrought and cast forms are presented in Table 1:

Table 1: American (ASTM), European (EN) and International Standards (ISO)
Note: EN standards replace all previous national standards) American (ASTM), European (EN) and International Standards (ISO)
StandardsApplicable Standard Numbers
CompositionPlateSheetStripTubeRodWireForgingsCastings
ASTM 122
171
122 122 111
359
395
466
467
469§
552
543
608
122
151
369
505‡
EN 1652
1653
1652
1653
1652
1654
12451
12449
12163 12420 1982
ISO 429 1634 1634 1634 1635

1637
1639

1638 1640

‡ 70-30 alloy only
§ 90-10 alloy only

Variations in the common national and international specifications for the 90-10, 70-30 and 66-30-2-2 Cu-Ni alloys are illustrated in Table 2.

Compositions

Table 2: Standard Compositions of Wrought Cu-Ni Alloys (UNS Copper Alloy Numbers): Maximum or Range
UNS Number
CuPbFeZnNi (incl Co)MnOther
C70600 Rem 0.05* 1.0-1.8 1.0* 9.0-11.0 1.0 *
C71500 Rem 0.05* 0.4-1.0 1.0* 29.0-33.0 1.0 *
C71640 Rem 0.01 1.7-2.3 - 29.0-32.0 1.5-2.5 0.03S 0.06C
*Special limits apply when the product is to be welded and is so specified by the purchaser: 0.5% Zn, 0.02%P, 0.02%Pb, 0.02%S and 0.05%C
(European Copper Alloy Numbers)
Designation
SymbolNumberCuCCo*FeMnNiPPbSnZnOth-er#
CuNi10-Fe1Mn CW3-52H Rem 0.05 0.1 1.0-2.0 0.5-1.0 9.0-10.0 0.02 0.02 0.03 0.5 0.2
CuNi30-Fe2Mn2 CW3-53H Rem 0.05 0.1 1.5-2.5 1.5-2.5 29.0-32.0 0.02 0.02 0.05 0.5 0.2
CuNi30-Mn1Fe CW3-54H Rem 0.05 0.1 0.4-1.0 0.5-1.5 30.0-32.0 0.02 0.02 0.05 0.5 0.2
*Co max 0.1% is counted as Ni
#S 0.05%max

From this information, the extent to which various standards overlap may be compared. In some standards, the impurities are more closely controlled than in others. Where there is doubt, advice from the supplier should be obtained.

Mechanical Properties

ASTM and EN data are given in the Mechanical Properties section.

Design

DIN Specifications covering 90-10 Cu-Ni Piping for Offshore Applications are:

DIN 85004-2: Pipelines of copper-nickel-alloys-Part 2: Basic principles for design and fabrication, test
DIN 85004-4: Pipelines made of copper-nickel-alloys-Part 4: Technical specifications for tubes
DIN 85004-9: Pipelines of copper-nickel-alloys-Part 9: General principles for the radiographic examination
DIN 86003-1: Ships and marine technology-Design, production and test of pipeline systems for liquid media-Part 1: Design
DIN 86018: Welded tubes made of CuNi10Fe1,6Mn for pipelines-dimensions
DIN 86019: Seamless tubes made of CuNi10Fe1,6Mn for pipelines-dimensions
DIN 86028: Welding necks of CuNi10Fe1,6Mn-Technical specifications
DIN 86037: Loose Flanges and welding necks for pipes of copper-nickel-alloys
DIN 86086: Fitting for butt welding into copper-nickel-alloy pipelines-Technical specifications
DIN 86087: Fitting for butt welding into copper-nickel-alloy pipelines-Saddle type connections
DIN 86088: Fitting for butt welding into copper-nickel-alloy pipelines-Tees
DIN 86089: Fitting for butt welding into copper-nickel-alloy pipelines-Concentric reducers
DIN 86090: Fitting for butt welding into copper-nickel-alloy pipelines-Elbows