EN 12167 Grade CuZn40Pb2 H130 – Lead‑Enhanced Copper Alloy for Superior Machinability
Material CuZn40Pb2, mat. No. CW617N, is an unhardenable wrought alloy. to the comparable make CuZn40Pb2, mat. No. 2.0402 acc. to DIN 17660 : 1983-12 applies: High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for CuZn40. Machinability is improved by Pb-addition. Corrosion resistance to water, several saline solutions and organic liquids is also lower than for unleaded alloys of the same zinc-content. Processing properties: warm forming: very good cold forming: unfavorable machinability: very good hard soldering: moderately soft soldering: very good TIG-welding: unfavorable burnishing: very good Application: for hot-pressed components, turned parts for precision engineering and optics, circuit boards and clockwerks as well as for clamps for electrical engineering.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.4 - 8.44 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 96 - 97 GPa | |
Hardness, Brinell | 20.0 °C | 130 [-] | |
Hardness, Vickers | 20.0 °C | 135 [-] | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 2E-5 1/K | |
300.0 °C | 2.1E-5 1/K | ||
Melting point | 875 - 1075 °C | Typical for Wrought Copper Brass | |
Specific heat capacity | 20.0 °C | 377 J/(kg·K) | |
Thermal conductivity | -200.0 °C | 50 W/(m·K) | |
20.0 °C | 113 - 123 W/(m·K) | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 1.49E+7 - 1.50E+7 S/m |
200.0 °C | 1.20E+7 S/m | |
Electrical resistivity | 20.0 °C | 6.6E-8 Ω·m |
200.0 °C | 8.3E-8 Ω·m | |
Specific Electrical conductivity | 25.7 % IACS | |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.05 % |
Copper | 57 - 59 % |
Iron | 0.3 % |
Lead | 1.6 - 2.5 % |
Nickel | 0.3 % |
Tin | 0.3 % |
Metal
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