EN 12163 Grade CuZn20 M

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CuZn20 (CW503L) is an unhardenable wrought alloy. High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are worse than for CuZn15. Corrosion resistance is similar to pure copper. Processing properties: warm forming: moderately cold forming: good machinability: moderately hard and soft soldering: very good TIG-welding: good burnishing: very good CuZn20 is used for metal goods, in jewelry industry and automotive electrics as well as for metall hoses and manometer. For the electrolytically tinned strip the coatings (Sn bright, Sn matt, Sn fuzed, SnPb) are listed by the application (better solderability, better corrosion resistance, reduction of the electrical contact resistance, better appearance) in the DIN EN 14436 : 2004-11 (Table 5)

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Equivalent Materials

This material data has been provided by WIAM.

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

8.67 - 8.7 g/cm³

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Elastic modulus

20.0 °C

119 GPa

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Poisson's ratio

20.0 °C

0.34 [-]

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Shear modulus

23.0 °C

40 GPa

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Typical for Wrought Copper Brass



Coefficient of thermal expansion

23.0 °C

1.7E-5 - 2.1E-5 1/K

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Typical for Wrought Copper Brass

Melting point

875 - 1075 °C

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Typical for Wrought Copper Brass

Specific heat capacity

20.0 °C

380 J/(kg·K)

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Thermal conductivity

20.0 °C

142 W/(m·K)

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Electrical conductivity

20.0 °C

1.90E+7 S/m

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Specific Electrical conductivity

33 % IACS

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Chemical properties



0.02 %

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79 - 81 %

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0.05 %

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0.05 %

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0.3 %

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0.1 %

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