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CuNi25 | CW350H Material Datasheet

Material Standard Values

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Material Description

Material Number	Material Number (single)	Standard	Scope	Standard Status	Country	VDA 231-106 classification
CW350H (DIN EN 1652 : 1998-03)	CW350H	DIN EN 1652 : 1998-03	Supersedes DIN 17670-1 : 1983-12, DIN 17670-2 : 1969-06, DIN 1751 : 1973-06, DIN 1791 : 1973-06	Valid	Germany	3.2	1)
1) Remark: CuNi25 is comparable to CuNi25, mat. no. 2.0830, acc. to DIN 17664 : 1983-12. To the comparable DIN-mark applies: The material shows favorable specific strength values also at endurance loading and increased temperatures. Thermal conductivity of pure copper is strongly reduced by Ni, the electrical resistance strongly increases according to the Ni-content. CuNi25 is corrosion and wear resistant. warm forming: good cold forming: good machinability: moderately hard soldering: very good soft soldering: very good gas-shielded welding: very good burnishing: very good Application: Preferred alloy for coins due to its silver-white color, brilliance, tarnish resistance and favorable wear resistance. Further application as cladding material.

Chemical Composition

C [%]	Co [%]	Fe [%]	Mn [%]	Ni [%]	Pb [%]	S [%]	Sn [%]	Zn [%]
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Mechanical Properties

Semi-finished Product	Strength Abbrevation	Nominal Size [mm]	Temperature [°C]	Tensile Strength [MPa]	Yield Strength (0.2% offset) [MPa]	Hardness HV
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Physical Properties

Temperature [°C]	Melting Temperature [°C]	Density [g/cm³]	Young's Modulus [GPa]	Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1]	Thermal Conductivity [W/(m*K)]
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Cross Reference

Material Name	Country	Standard
CuNi25	Europe	EN 1652
CuNi25	Bulgaria	BDS 13709-76
CuNi25	International	ISO 429-83
MN25	Poland	PN-78/H-87052
CuNi25	Hungary	MSZ 771/1-77
C71300	USA	UNS
CuNi25 (2.0830)	Germany	DIN 17664

Producer/Supplier/Trade names

Tradename	Supplier
CuNi25	CSN Carl Schreiber GmbH, Neunkirchen
CuNi25	KME Germany GmbH, Osnabrück

Material Compliance

REACh	RoHS
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