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CuZn31Si1 | CW708R Material Datasheet

Material Test Series Values
Material Standard Values

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Material Description

Material Number	Material Name	Material Number (single)	Standard	Scope	Standard Status	Country	Predecessor	VDA 231-106 classification
CW708R (DIN EN 12449 : 2023-08)	CuZn31Si1	CW708R	DIN EN 12449 : 2023-08	Supersedes DIN EN 12449 : 2019-12	Valid	Germany	CuZn31Si1	3.2	1)
1) Remark: Seamless, round tubes from copper alloy for general purposes.

Chemical Composition

Cu [%]	Fe [%]	Ni [%]	Pb [%]	Si [%]	Remainder
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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]	Elongation A [%]	Hardness HB \| HBW	Hardness HV
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Physical Properties

Condition	Temperature [°C]	Melting Temperature [°C]	Density [g/cm³]	Young's Modulus [GPa]	Mean Coefficient of Thermal Expansion [10^-6*K^-1]	Mean Coefficient of Thermal Expansion (reference 20°C) [10^-6*K^-1]	Thermal Conductivity [W/(m*K)]	Specific Electrical Resistance [µΩm]	Mean Specific Heat Capacity [kJ/(kg*K)]	Electric Conductivity [MS/m]	Specific Electric Conductivity [% IACS]
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Cross Reference

Material Name	Country	Standard
CuZn31Si1	Europe	EN 12449
C69800	USA	UNS	1)
CuZn31Si1	Germany	DIN 17660	2)
2.0490	Germany	DIN 17660	2)
1) Source: Deutsches Kupferinstitut Berufsverband e.V., Düsseldorf
2) Source: DIN CEN/TS 13388 (DIN SPEC 9700)

Producer/Supplier/Trade names

Tradename	Supplier
CuZn31Si1	KME Mansfeld GmbH, Hettstedt
CuZn31Si1	Wieland-Werke AG, Velbert
CuZn31Si1	KME Germany GmbH, Osnabrück