EN 12167 Grade CuZn35Ni3Mn2AlPb – Unhardenable Copper Alloy with Enhanced Strength & Corrosion Resistance
CuZn35Ni3MnAlPb (CW710R former identification: CuZn35Ni2) is an unhardenable copper alloy. High hardness and strength parameter are achievable by cold forming only. Nickel improves strength properties, corrosion resistance and high-temperature resistance. CuZn35Ni3MnAlPb shows favorable weathering and freshwater resistance. Processing properties: warm forming: good cold forming: moderately machinability: moderately hard soldering: moderately soft soldering: unfavorable TIG-welding: good burnishing: very good Application in machine, apparatus and plant engineering, in shipbuilding e.g. for boat propeller shafts (seawater resistance).
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.28 - 8.3 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 93 GPa | |
Elongation | 20.0 °C | 10 % | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Tensile strength | 20.0 °C | 440 MPa | |
Yield strength Rp0.2 | 20.0 °C | 180 - 200 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.7E-5 - 2.1E-5 1/K | Typical for Wrought Copper Brass |
Melting point | 875 - 1075 °C | Typical for Wrought Copper Brass | |
Specific heat capacity | 23.0 °C | 371 - 418 J/(kg·K) | Typical for Wrought Copper Brass |
Thermal conductivity | 20.0 °C | 50 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 5.90E+6 S/m |
Specific Electrical conductivity | 10 % IACS |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.3 - 1.5 % |
Copper | 58 - 61 % |
Iron | 0.5 % |
Lead | 0.2 - 0.8 % |
Manganese | 1.5 - 2.5 % |
Nickel | 2 - 3 % |
Silicon | 0.1 % |
Tin | 0.5 % |
Metal
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