Standards

Copper-Nickel Alloy Standards

Product Forms
Compositions
Mechanical Properties
Design
Useful Links and References

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)*
Standards	Applicable Standard Numbers
	Composition	Plate	Sheet	Strip	Tube	Rod	Wire	Forgings	Castings
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
	Cu	Pb	Fe	Zn	Ni (incl Co)	Mn	Other
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
Symbol	Number	Cu	C	Co*	Fe	Mn	Ni	P	Pb	Sn	Zn	Oth-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

British Standard BS MA 18. Salt Water Piping Systems in Ships
EEMUA
EEMUA Specifications covering 90-10 Cu-Ni Piping for Offshore Applications are :-
Tubes Seamless and Welded Publication 144
Flanges Composite and Solid Publication 145
Fittings Publication 146
(EEMUA is the Engineering Equipment and Materials Users Association, UK)
ASTM
ASME
DIN

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

References

Standards and Specifications, .