EN 12168 Grade CuZn39Pb2 (R410) – Specifications & Performance
Material CuZn39Pb2, mat. No. CW612N, is an unhardenable wrought alloy. to the comparable make CuZn39Pb2, mat. No. 2.0380 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 the unleaded brass grade of the same Zn-content. 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 components in precision mechanics, machine and apparatus engineering as well as for circuit boards and clockwerks for watch industry.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.4 - 8.45 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 102 GPa | |
Elongation | 20.0 °C | 12 - 15 % | |
Elongation A10 | 20.0 °C | 12 % | |
Elongation A100 | 20.0 °C | 8 - 10 % | |
Elongation A11.3 | 20.0 °C | 10 % | |
Poisson's ratio | 20.0 °C | 0.34 [-] | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Tensile strength | 20.0 °C | 410 MPa | |
Yield strength Rp0.2 | 20.0 °C | 190 - 250 MPa |
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 | 20.0 °C | 109 - 117 W/(m·K) | |
200.0 °C | 134 W/(m·K) | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 1.39E+7 - 1.40E+7 S/m |
200.0 °C | 1.10E+7 S/m | |
Electrical resistivity | 20.0 °C | 7.1E-8 Ω·m |
200.0 °C | 9.1E-8 Ω·m | |
Specific Electrical conductivity | 24 % IACS | |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.05 % |
Copper | 59 - 60 % |
Iron | 0.2 - 0.3 % |
Lead | 1.6 - 2.5 % |
Nickel | 0.3 % |
Tin | 0.3 % |
Metal
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