EN 1652 CuZn37 R410: High-Performance Copper Alloy for Cold Forming
CuZn37 (CW508L) is an unhardenable wrought alloy. High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for CuZn36. CuZn37 is the main alloy for cold forming. It shows favorable corrosion resistance to fresh water. Processing properties: warm forming: good cold forming: very good machinability: moderately hard soldering: good soft soldering: very good TIG-welding: moderately burnishing: very good CuZn37 is used for bulb bases, wire clamps for aerial lines, contact springs, metal and wooden screws, print roller and zip fastener. 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 | 8.4 - 8.44 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 110 GPa | |
100.0 °C | 106 GPa | ||
200.0 °C | 102 GPa | ||
300.0 °C | 97 GPa | ||
400.0 °C | 89 GPa | ||
500.0 °C | 79 GPa | ||
Elongation | 20.0 °C | 12 % | |
Elongation A50 | 20.0 °C | 8 % | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Tensile strength | 20.0 °C | 410 - 490 MPa | |
Yield strength Rp0.2 | 20.0 °C | 300 MPa | |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 150.0 °C | 1.9E-5 1/K | |
300.0 °C | 2.1E-5 1/K | ||
650.0 °C | 2.3E-5 1/K | ||
800.0 °C | 2.4E-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 | 120 W/(m·K) | ||
200.0 °C | 142 W/(m·K) | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 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 | |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.02 - 0.05 % |
Copper | 62 - 64 % |
Iron | 0.1 % |
Lead | 0.1 % |
Nickel | 0.3 % |
Phosphorus | 0.2 % |
Tin | 0.1 % |
Metal
- EN 1652 CuNi30Mn1Fe R410 – Premium Copper-Nickel-Manganese Alloy
- EN 1652 Grade CuZn37 H115 – High-Strength, Cold-Formable Copper Alloy
- EN 1652 CuZn37 R480 – Premium Copper Alloy for Cold Forming
- EN 1652 CuZn37 R440 – High-Strength, Corrosion-Resistant Copper Alloy
- EN 1652 Grade CuZn37 R300 – Premium Copper Alloy for Cold Forming and Corrosion Resistance
- EN 1652 Grade CuZn37 R350 – Premium Unhardenable Copper Alloy for Cold Forming
- EN 1652 Grade CuZn37 R550: Premium Copper Alloy for Cold‑Forming & Electrical Applications
- EN 1652 Grade CuZn15 (R410) – High-Strength, Corrosion-Resistant Copper Alloy
- EN 1652 Grade CuZn37 (G010) – Premium Unhardenable Wrought Copper Alloy
- EN 1652 CuZn37 (CW508L) – Premium Grade 37 Copper Alloy for Cold Forming & Electrical Applications