EN 1652 R440 Grade CuZn35Pb1 – Unhardenable, Lead-Added Brass with High Machinability
Material CuZn35Pb1, mat. No. CW600N, is an unhardenable wrought alloy. to the comparable make CuZn36Pb, 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: For wheels and circuit boards in watch industry, matrices for printing industry, clamps for electrical engineering, nipples, screws.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.45 - 8.47 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 110 GPa | |
Elongation | 20.0 °C | 10 - 14 % | |
Elongation A10 | 20.0 °C | 12 % | |
Elongation A100 | 20.0 °C | 10 % | |
Elongation A50 | 20.0 °C | 5 % | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Tensile strength | 20.0 °C | 440 - 540 MPa | |
Yield strength Rp0.2 | 20.0 °C | 300 - 370 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 | 20.0 °C | 377 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 113 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 1.47E+7 S/m |
Specific Electrical conductivity | 25 % IACS |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.05 % |
Copper | 62.5 - 64 % |
Iron | 0.1 % |
Lead | 0.8 - 1.6 % |
Nickel | 0.3 % |
Tin | 0.1 % |
Metal
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