Cupro NB CuNi2Be Hard Copper Alloy
Cupro NB CuNi2Be
RWMA Class3 - C17510 - CW110C
Cupro CNB It is a multi-purpose copper alloy that has both the advantages of the physical properties of copper and moderate mechanical properties.
Cupro NB has higher electrical and thermal conductivity altough the areas of use are the same as Cupro CNB
Application Area
Able to be used in spot welding electrodes, welding discs, electrodes of projection and butt welding and welding of stainless steels,
Able to be used in parts of plastic injection mould, Able to be used as a 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
Code: CuNi2Be CuCoNiBe W. Nr. 2.0850, EN: cw 110C, AFNOR: UK2Be, USA – CDA: C17510 RWMA: CLASS3 ASTM B534,
Beriyllium |
Cobalt |
Nickel |
Other |
Copper |
Be |
Co |
Ni |
MAX |
Cu |
0,4 |
0,3 |
1,8 |
0,4 |
Kalan |
Mechanical Properties Hardness
Hardness |
200 - 240 |
HB |
Tensile strength |
700 - 800 |
N/mm2 |
Yield strength |
550 - 700 |
kN/mm2 |
Modulus of elasticity (20°C) |
135 |
kN/mm2 |
Elongation L=5D |
10 -15 |
% |
Physical Properties
Electrical conductivity |
65 |
% |
Coefficient of thermal expansion |
17,2 |
1/K * 10-6 |
Thermal conductivity (20°C) |
300 |
W/mK |
Density |
8,8 |
g/cm3 |
Private Information
Production can be made according to the special composition and technical drawing requested for aviation, automotive and the entire manufacturing sector.
