Equivalent Specifications
BS EN 1652 1998 CW 111C
BS EN 12165 1998 CW 111C
BS EN 12420 1999 CW 111C
BS EN 12163 2011 CW 111C
DIN 17666 2.0855
DIN 17672 2.0855
ASTM B411 C647000
NFL 14-701
DTD 498
RWMA Class 3
ISO 1187
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 before precipitation hardening can further improve strength and hardness. The alloy has a good corrosion resistance in a variety of environments.
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.
Electrical
The alloy is used mainly for fasteners. In the electrical industry it is used for switch gear and circuit breakers
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ASNA 3405
An Airbus specification for a silicon bronze CuNi2Si. The alloy can be cold worked and precipitation hardened and has excellent heat and electrical conductivity.
The alloy has good wear properties and high ductility and can be specified to additional standards such as EN 12163/12165/12167 CW111C, DIN 17666/17672 W Nr 2.0855
Description |
Copper Nickel Silicon
|
Nominal Composition |
CuNi2Si |
Alloy Type |
Wrought |
Typical Mechanical Properties
Tensile Strength (N/mm²) |
490 |
Proof/Yield Strength (N/mm²) |
340 |
Elongation (%) |
12 |
Hardness Brinell |
160 |
Impact Izod J20°C |
|
Typical Physical Properties
Density g/cm³ |
8.8 |
Melting Temperature Range °C |
1040-1060 |
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 |
|