Cupro NSH® CuNi3Si Hard Copper Alloy
Cupro NSH® CuNi3Si
RWMA Class3 - C70250 - CW112C
CuproNSH® is a copper alloy developed by Sağlam Metal.
Suitable for applications requiring high mechanical properties along with good electrical and thermal conductivity.
Properties have been improved via heat treatment by Sağlam Metal.
Produced as an alternative to Cupro CNB alloy. Able to be used at least in all application areas of Cupro CNB. Possesses a very high wear resistance both at room temperature and at elevated temperatures.
Cupro NSH CuNi3Si Chromium Nickel Silicon Copper Alloy
Area of Application
Used in cases when high electrical and thermal conductivity are desired together with good mechanical properties,
Spot welding electrodes, groove-welding discs, electrodes of Projection and butt welding and welding of stainless steels ,
Plastic injection moulds,
Plastic expansion moulds, cooling cores and other parts,
Permanent mould in casting of alloys like copper, brass and bronze,
Able to be used in electrodes of wire mesh machines Able to be used in pistons of aluminium injection castings.
Chemical Composition and Material Number
Code: 2.0855, C18000, UNS C64700, CuNiSi, CW111C, CW 112C, RWMA Class 3, CuNi7Si2Cr CuNi2Si, C70250, CuNi2SiCr, CuNi2Si Cr
Chromiun |
Silicium |
Nickle |
Other |
Copper |
Cr |
Si |
Ni |
MAX |
Cu |
0.4 - 0.5 |
0.8 - 1 |
2.8 - 3.2 |
0.20 |
Remaining |
Delivery Condition: Delivered in heat-treated condition.
Mechanical Properties
Hardness |
220 - 240 |
HB |
Tensile Strength |
750 - 850 |
N/mm2 |
Yield Strength |
650 - 750 |
N/mm2 |
Moduls of Elasticity (20°C) |
130 |
GPa |
Elogation L=5D |
6 - 10 |
% |
Physical Properties
Electrical Conductivity |
23 - 25 |
MS/m |
Thermal Expansion Coefficient |
17 |
1/K * 10-6 |
Thermal Conductivity (20°C) |
210 |
W/mK |
Density |
8.8 |
g/cm3 |
Special Information
It can be manufactured special demand of alloys for aircraft industries.
Extruded round and flat bars. Other shapes can be cast and forged on customer demand.
