EN 12164 Grade CuNi12Zn30Pb1 R650

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Material CuNi12Zn30Pb1, mat. No. CW406J is an alloy of high strength and hardness. To the comparabel mark CuNi12Zn30Pb1, mat. No. 2.0780, acc. to DIN 17663 : 1983-12 applies: Strength is further increasable due to the high strain hardening capability. The material does not embrittle at low temperatures. Low electrical and thermal conductivity. The alloy is non-magnetic, corrosion resistance is better than for pure copper. Machinability improves by Pb-addition, ductility decreases and cold workabiliy deteriorates. Processing properties: warm forming: unfavorable cold forming: moderately machinability: good hard and soft soldering: very good TIG-welding: moderately burnishing: good Application: Particularly in precision engineering and in toolbuilding for turning and drilling parts, in electrical engineering and electronics as well as in shipbuilding and in construction trade.

Related Standards

This material data has been provided by WIAM.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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20.0 °C

8.6 - 8.62 g/cm³

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Elastic modulus

20.0 °C

120 GPa

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Poisson's ratio

23.0 °C

0.32 [-]

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Typical for Wrought Copper Nickel Silver Grade

Tensile strength

20.0 °C

650 MPa

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Yield strength Rp0.2

20.0 °C

580 - 600 MPa

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Coefficient of thermal expansion

300.0 °C

1.95E-5 1/K

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Melting point

875 - 1135 °C

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Typical for Wrought Copper Nickel Silver Grade

Specific heat capacity

23.0 °C

377 J/(kg·K)

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Typical for Wrought Copper Nickel Silver Grade

Thermal conductivity

20.0 °C

42 W/(m·K)

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Electrical conductivity

20.0 °C

4.20E+6 S/m

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Specific Electrical conductivity

7 % IACS

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Chemical properties



56 - 58 %

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0.3 %

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0.5 - 1.5 %

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0.5 %

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11 - 13 %

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0.2 %

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