EN 1652 CuZn5 R270 – Premium Copper‑Zinc Alloy for Electrical and Structural Applications
CuZn5 (CW500L) is an unhardenable wrought alloy. High hardness and strength parameter are achievable by cold forming only. CuZn5 has a favorable conductivity, resistance to atmospheric corrosion and is ideal for enamelling. Processing properties: warm forming: moderately cold forming: good machinability: unfavorable hard and soft soldering: very good TIG-welding: good burnishing: good The material is used for installation components in electrical engineering, for shock-absorber rods, metal goods as well as in jewelry and watches industry. 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 | 8.86 - 8.9 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 127 GPa | |
Elongation | 20.0 °C | 19 % | |
Elongation A50 | 20.0 °C | 12 % | |
Poisson's ratio | 20.0 °C | 0.34 [-] | |
Shear modulus | 23.0 °C | 40 GPa | Typical for Wrought Copper Brass |
Tensile strength | 20.0 °C | 270 - 350 MPa | |
Yield strength Rp0.2 | 20.0 °C | 200 - 300 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.7E-5 1/K | |
300.0 °C | 1.8E-5 1/K | ||
Melting point | 875 - 1075 °C | Typical for Wrought Copper Brass | |
Specific heat capacity | 20.0 °C | 377 - 380 J/(kg·K) | |
100.0 °C | 386 J/(kg·K) | ||
200.0 °C | 398 J/(kg·K) | ||
Thermal conductivity | -200.0 °C | 128 W/(m·K) | |
20.0 °C | 234 - 243 W/(m·K) | ||
200.0 °C | 272 W/(m·K) | ||
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical conductivity | 20.0 °C | 3.30E+7 S/m |
Specific Electrical conductivity | 57 % IACS |
Chemical properties
| Property | Value |
|---|---|
Aluminium | 0.02 % |
Copper | 94 - 96 % |
Iron | 0.05 % |
Lead | 0.05 % |
Nickel | 0.3 % |
Phosphorus | 0.2 % |
Tin | 0.1 % |
Metal
- EN 1652 CuCo1Ni1Be TH – High-Performance Copper Alloy for Industrial Applications
- EN 1652 CuZn5 H045 – Premium Copper‑Zinc Alloy for Electrical Engineering
- EN 1652 CuZn5 H110 – Premium Copper Alloy for Electrical & Shock-Absorbing Applications
- EN 1652 Grade CuSn6 M – Premium Tin-Copper Alloy for Superior Corrosion Resistance
- EN 1652 CuZn5 H075 – High‑Strength, Corrosion‑Resistant Wrought Alloy
- EN 1652 Grade CuNi2Si M – High-Performance Copper Alloy for Superior Conductivity and Corrosion Resistance
- EN 1652 CuZn5 R230 – High‑Performance Unhardenable Wrought Alloy for Electrical and Industrial Applications
- EN 1652 CuZn5 R340 – High-Conductivity, Corrosion-Resistant Alloy
- EN 1652 Grade CuZn30 R270 – Premium Unhardenable Copper Alloy
- EN 1652 Grade CuZn20 R270 – High‑Strength Wrought Alloy for Automotive & Jewelry