EN 12166 Grade CuNi18Zn20 H01 – High Strength, Corrosion-Resistant Copper–Nickel–Zinc Alloy
Material CuNi18Zn20, mat. No. CW409J is an alloy of high strength and hardness. To the comparabel mark CuNi18Zn20, mat. No. 2.0740, acc. to DIN 17663 : 1983-12 applies: Strength is further increasable due to the high strain hardening capability. The material does not embrittle at low temperatures. Low electrical and thermal conductivity. The alloy is non-magnetic, corrosion resistance is better than for pure copper. Processing properties: warm forming: moderately cold forming: very good machinability: moderately hard and soft soldering: very good TIG-welding: very good burnishing: very good Application: In electrical engineering and electronics for springs, contacts, membranes as well as in precision engineering and in equipment manufacturing. In food industry, for musical instruments, glasses frames, safety keys as well as in construction trade for paneling, show-cases and stairrails.
Properties
General
| Property | Temperature | Value | Comment |
|---|---|---|---|
Density | 23.0 °C | 8.4 - 8.9 g/cm³ | Typical for Wrought Copper Nickel Silver Grade |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 120 - 140 GPa | Typical for Wrought Copper Nickel Silver Grade |
Elongation | 20.0 °C | 15 % | |
Elongation A10 | 20.0 °C | 12 % | |
Elongation A100 | 20.0 °C | 6 - 10 % | |
Hardness, Vickers | 20.0 °C | 145 - 185 [-] | |
Poisson's ratio | 23.0 °C | 0.32 [-] | Typical for Wrought Copper Nickel Silver Grade |
Tensile strength | 20.0 °C | 490 - 650 MPa | |
Yield strength Rp0.2 | 20.0 °C | 320 - 360 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 23.0 °C | 1.6E-5 - 1.9E-5 1/K | Typical for Wrought Copper Nickel Silver Grade |
Melting point | 875 - 1135 °C | Typical for Wrought Copper Nickel Silver Grade | |
Specific heat capacity | 23.0 °C | 377 J/(kg·K) | Typical for Wrought Copper Nickel Silver Grade |
Thermal conductivity | 23.0 °C | 21 - 116 W/(m·K) | Typical for Wrought Copper Nickel Silver Grade |
Chemical properties
| Property | Value |
|---|---|
Copper | 60 - 63 % |
Iron | 0.3 % |
Lead | 0.03 % |
Manganese | 0.5 % |
Nickel | 17 - 19 % |
Tin | 0.03 % |
Metal
- EN 12166 Grade CuNi10Zn27 H01: High-Performance Copper-Nickel-Zinc Alloy Wire
- EN 12166 CuNi12Zn24 H01 – High Strength, Corrosion-Resistant Copper-Nickel-Zinc Alloy
- EN 12166 CuNi18Zn20 H145 – High‑Strength, Corrosion‑Resistant Brass Alloy
- EN 12166 Grade CuNi18Zn20 R660 – Premium High‑Strength Copper Alloy
- EN 12166 Grade CuNi18Zn20 R800: Premium High-Strength Copper‑Nickel‑Zinc Alloy
- EN 12166 Grade CuZn38Pb2 H01 – Wrought Copper‑Brass Alloy Specification
- EN 12166 Grade CuNi18Zn20 R480 – High Strength, Corrosion-Resistant Copper Alloy
- EN 12166: CuZn37 H01 – Premium Copper Alloy for Cold Forming Applications
- EN 12166 Grade CuZn36 H01 – Premium Copper Alloy for Precision Engineering
- EN 12166 Grade CuSn5 H01 – Premium CuSn5 Alloy for Springs & Connectors