Cupro Nickel Alloy CuNi2 Foil for Thermal Overload Relay
CuNi2Si - UNS.C64700/C70250 Nickel Silicon Bronze Alloys, which is an age-hardening alloy, higher alloyed in comparison with CuNi1.5Si, for current-carrying formed parts. It has an a-structure with very fine precipitations and recommends itself both for lead frames which require a high rigidity of the pins and for connector with high demands on the electrical conductivity, strength and relaxation behavior. In addition, the CuNi2Si can also be used for current-carrying formed parts and contact springs due to its good fatigue strength, forming and spring properties.
Typical Application for C64700/C70250 Nickel Silicon Bronze Alloys:
Electrical : Resistance Welding Electrodes, Motor Rotor Bar, And Resistance Welding Tips.
Fastener : Fastener parts
Industrial : Brazing Rod, Welding Rod
Available Products (forms):
Round bars, Flat bars, Square bars, Rectangular bars, Hexagon bars
Custom shapes are available upon request.
Chemical Content, %
|Max Continuous Service Temp||200ºC|
|Resisivity at 20ºC||0.05±10%ohm mm2/m|
|Tensile Strength,N/mm2 Annealed,Soft||140~310 Mpa|
|Tensile Strength,N/mm2 Cold Rolled||280~620 Mpa|
|EMF vs Cu, μV/ºC (0~100ºC)||-12|
Application of CuNi2
CuNi2 low resistance heating alloy is widely used in low-voltage circuit breaker, thermal overload relay, and other low-voltage electrical product. It is one of the key materials of the low-voltage electrical products. The materials produced by our company have the characteristics of good resistance consistency and superior stability. We can supply all kinds of round wire, flat and sheet materials
1). the units are based upon US Customary.
2). the typical physical properties apply to age hardened products.
Rods/Bars/Plates/Sheets: UNS.C64700, UNS.C70250, RWMA Class 3
European Standards: CuNi2Si, DIN 2.0855, CW111C to EN
ASTM: American Society for Testing and Materials
RWMA: Resistance Welder Manufacturers' Association
Note: Unless otherwise specified, material will be produced to DIN & RWMA