EN 12164 Grade CuNi12Zn30Pb1 R420

View suppliers (2)
Want to keep this datasheet? Save it now in your required format


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.

Ashby charts

See where falls on the material property chart for against in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.





20.0 °C

8.6 - 8.62 g/cm³

Show Material materials with Density of 8.6 - 8.62 g/cm³



Elastic modulus

20.0 °C

120 GPa

Show Material materials with Elastic modulus of 120 GPa


20.0 °C

20 %

Show Material materials with Elongation of 20 %

Elongation A10

20.0 °C

16 %

Show Material materials with Elongation A10 of 16 %

Elongation A100

20.0 °C

12 %

Show Material materials with Elongation A100 of 12 %

Elongation A11.3

20.0 °C

16 %

Show Material materials with Elongation A11.3 of 16 %

Poisson's ratio

23.0 °C

0.32 [-]

Show Material materials with Poisson's ratio of 0.32 [-]

Typical for Wrought Copper Nickel Silver Grade

Tensile strength

20.0 °C

420 MPa

Show Material materials with Tensile strength of 420 MPa

Yield strength Rp0.2

20.0 °C

260 - 280 MPa

Show Material materials with Yield strength Rp0.2 of 260 - 280 MPa



Coefficient of thermal expansion

300.0 °C

1.95E-5 1/K

Show Material materials with Coefficient of thermal expansion of 1.95E-5 1/K

Melting point

875 - 1135 °C

Show Material materials with Melting point of 875 - 1135 °C

Typical for Wrought Copper Nickel Silver Grade

Specific heat capacity

23.0 °C

377 J/(kg·K)

Show Material materials with Specific heat capacity of 377 J/(kg·K)

Typical for Wrought Copper Nickel Silver Grade

Thermal conductivity

20.0 °C

42 W/(m·K)

Show Material materials with Thermal conductivity of 42 W/(m·K)



Electrical conductivity

20.0 °C

4.20E+6 S/m

Show Material materials with Electrical conductivity of 4.20E+6 S/m

Specific Electrical conductivity

7 % IACS

Show Material materials with Specific Electrical conductivity of 7 % IACS

Chemical properties



56 - 58 %

Show Material materials with Copper of 56 - 58 %


0.3 %

Show Material materials with Iron of 0.3 %


0.5 - 1.5 %

Show Material materials with Lead of 0.5 - 1.5 %


0.5 %

Show Material materials with Manganese of 0.5 %


11 - 13 %

Show Material materials with Nickel of 11 - 13 %


0.2 %

Show Material materials with Tin of 0.2 %