EN 12166 Grade CuZn39Pb3 – Leaded Brass with Enhanced Machinability
Material CuZn39Pb3, mat. No. CW614N, is an unhardenable wrought alloy. to the comparable make CuZn39Pb3, mat. No. 2.0401 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 unleaded brass 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: Main alloy of the brass materials for machining on automats. Use for all types of form turning parts, in precision engineering as well as in watch and electrical industry.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.4 - 8.47 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 96 - 97 GPa | |
Elongation | -196.0 °C | 40 % | |
-78.0 °C | 34 % | ||
20.0 °C | 25 - 33 % | ||
Hardness, Brinell | 20.0 °C | 80 - 115 [-] | |
Hardness, Vickers | 20.0 °C | 85 - 120 [-] | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Tensile strength | -196.0 °C | 575 MPa | |
-78.0 °C | 460 MPa | ||
20.0 °C | 360 - 425 MPa | ||
Yield strength Rp0.2 | 20.0 °C | 250 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.93E-5 1/K | |
200.0 °C | 2.1E-5 1/K | ||
300.0 °C | 2.14E-5 1/K | ||
800.0 °C | 2.47E-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 | 1.46E+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 - 25.2 % IACS | |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.05 % |
Copper | 57 - 59 % |
Iron | 0.3 % |
Lead | 2.5 - 3.5 % |
Nickel | 0.3 % |
Tin | 0.3 % |
Metal
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