EN 12163 Grade CuZn15 R430 – Unhardenable Wrought Alloy for Electrical & Jewelry Applications
CuZn15 (CW502L) is an unhardenable wrought alloy. High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for CuZn10. Corrosion resistance is similar to pure copper. Processing properties: warm forming: moderately cold forming: good machinability: moderately hard and soft soldering: very good TIG-welding: good burnishing: very good CuZn15 is used in electrical engineering, for metal goods as well as in jewelry industry, for metall hoses, pressure measuring instruments, signs, casings and suspension bodies. For the electrolytically tinned strip the coatings (Sn bright, Sn matt, Sn fuzed, SnPb) are listed by the application (better solderability, better corrosion resistance, reduction of the electrical contact resistance, better appearance) in the DIN EN 14436 : 2004-11 (Table 5)
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 8.73 - 8.8 g/cm³ |
Mechanical
| Property | Temperature | Value |
|---|---|---|
Elastic modulus | 20.0 °C | 122 GPa |
100.0 °C | 119 GPa | |
200.0 °C | 114 GPa | |
300.0 °C | 109 GPa | |
400.0 °C | 103 GPa | |
500.0 °C | 94 GPa | |
600.0 °C | 84 GPa | |
700.0 °C | 74 GPa | |
Elongation | 20.0 °C | 10 % |
Elongation A100 | 20.0 °C | 6 % |
Elongation A11.3 | 20.0 °C | 8 % |
Poisson's ratio | 20.0 °C | 0.34 [-] |
Shear modulus | 20.0 °C | 45 GPa |
Tensile strength | 20.0 °C | 430 MPa |
Yield strength Rp0.2 | 20.0 °C | 350 - 390 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 - 380 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 159 W/(m·K) | |
80.0 °C | 167 W/(m·K) | ||
120.0 °C | 172 W/(m·K) | ||
160.0 °C | 176 W/(m·K) | ||
200.0 °C | 184 W/(m·K) | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 2.10E+7 - 2.11E+7 S/m |
Electrical resistivity | 20.0 °C | 4.7E-8 Ω·m |
Specific Electrical conductivity | 36 % IACS |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.02 % |
Copper | 84 - 86 % |
Iron | 0.05 % |
Lead | 0.05 % |
Nickel | 0.3 % |
Tin | 0.1 % |
Metal
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