EN 12166 CuZn35Pb2 R340 – Lead-Enhanced Brass Alloy for High Strength and Superior Machinability
Material CuZn35Pb2, mat. No. CW601N, is an unhardenable wrought alloy. To the comparable make CuZn36Pb1,5, mat. No. 2.0331 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: good cold forming: good machinability: very good hard soldering: moderately soft soldering: very good TIG-welding: unfavorable burnishing: very good Application: Wheels for circuit boards in watch industry, matrices for printing industry, clamps for electrical engineering, nipples, screws.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.46 - 8.5 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | 20.0 °C | 105 - 110 GPa |
Elongation | 20.0 °C | 20 % |
Elongation A100 | 20.0 °C | 10 % |
Elongation A11.3 | 20.0 °C | 15 % |
Shear modulus | 20.0 °C | 39 GPa |
Tensile strength | 20.0 °C | 340 MPa |
Yield strength Rp0.2 | 20.0 °C | 280 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 200.0 °C | 2.04E-5 1/K | |
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 | 113 - 116 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 1.47E+7 S/m |
Electrical resistivity | 20.0 °C | 6.8E-8 Ω·m |
Specific Electrical conductivity | 25 % IACS |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.05 % |
Copper | 62 - 63.5 % |
Iron | 0.1 % |
Lead | 1.6 - 2.5 % |
Nickel | 0.3 % |
Tin | 0.1 % |
Metal
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