Equivalent Specifications
BS EN 12420 1999 CW112C
BS EN 12165 1998 CW 112C
Key Features
A copper alloy containing nickel and silicon, that can be strengthened by heat treatment. Material solution heat treated at high temperature, has a soft supersaturated alpha-phase structure, and subsequent precipitation hardening at lower temperature precipitates finely dispersed nickel silicide in the matrix.
In this condition, the alloy exhibits high strength and hardness, combined with good wear resistance and conductivity. Cold working can further improve strength and hardness. The alloy has a good corrosion resistance in a variety of environments.
The most commonly used wrought forms are sheet, strip, rod and forgings.
Typical Uses
A high copper alloy with extremely good
electrical and heat conductivity that is
strengthened by heat treatment and cold work.
Has good corrosion resistance and ductility
and is used mainly for fasteners. In the electrical industry it is used for switch gear and circuit breakers.
Print this page »
CW112C
A European copper alloy forging standard for CuNi3Si CW112C. A copper nickel silicon alloy, specially developed to provide a unique blend of mechanical and physical properties for high performance engineering.It is a precipitation hardened alloy with high strength and excellence wear resistance. It has higher strength than CW111C but with slightly lower electrical and heat conductivity properties. The alloy can also be specified to EN 12165 CW112C, DIN 17666/17672-1 W Nr 2.0857, GOST 18175, ASTM B 422 C70250 and GB 5223/4431 QSi-3.
Description |
Copper Nickel Silicon
|
Nominal Composition |
CuNi3Si |
Alloy Type |
Wrought |
Typical Mechanical Properties
Tensile Strength (N/mm²) |
226 |
Proof/Yield Strength (N/mm²) |
212 |
Elongation (%) |
28 |
Hardness Brinell |
76 |
Impact Izod J20°C |
|
Typical Physical Properties
Density g/cm³ |
8.8 |
Melting Temperature Range °C |
1050-1070 |
Thermal Conductivity W/mK |
20 |
Electrical Resistivity μΩ.m15°C |
5.8 |
Coefficient of Thermal Expansion 0-250°C |
16 |
Relative Magnetic Permeability |
< 1.01 |
Coefficient of Friction |
|