EN 12163 Grade CuZn30 H115 – Premium Copper Alloy for Precision Applications
CuZn30 (CW505L) is an unhardenable wrought alloy. High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for CuZn28. Corrosion resistance is similar to pure copper. Processing properties: warm forming: good cold forming: very good machinability: moderately hard and soft soldering: very good TIG-welding: good burnishing: very good CuZn30 is used for deep drawing components, musical instruments, hose tubes, springing elements, clockfaces and as cladding material. 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 | 8.5 - 8.55 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 114 GPa | |
Hardness, Brinell | 20.0 °C | 110 - 145 [-] | |
Hardness, Vickers | 20.0 °C | 115 - 150 [-] | |
Poisson's ratio | 20.0 °C | 0.34 [-] | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 150.0 °C | 1.9E-5 1/K | |
300.0 °C | 2E-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 | 121 - 126 W/(m·K) | ||
200.0 °C | 147 W/(m·K) | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 1.60E+7 S/m |
Specific Electrical conductivity | 28 % IACS |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.02 % |
Copper | 69 - 71 % |
Iron | 0.05 % |
Lead | 0.05 % |
Nickel | 0.3 % |
Tin | 0.1 % |
Metal
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