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KG   Calculation

Cupro CNB CuCoNiBe



Be Co+Ni Other Cu
0.50 2.00 0.50 Remaining




Code: DIN 17666 – W. Nr. 2.1285, EN: cw 103C, AFNOR: UK2Be, USA – CDA: C175000 RWMA: CLASS3

Cupro CNB Material Properties: Hard copper alloy with high thermal conductivity and high mechanical properties combined with good hardness and high temperature strength.

Cupro CNB Areas of Applications :

•    Spot welding electrodes and seam welding discs for stainless steel, Monel and nickel alloys
•    Flash welding dies, wire mesh electrodes
•    Plastic blow and injection moulds and inserts in steel tools for higher cooling rates
•    Nozzles and needles for hot runner systems
•    Plunger tips in aluminium die casting machines
•    Moulds for non-ferrous metal castings (as copper, brass, bronze)
•    Welding tools in plastic packaging

Heat Treatment : Our company delivered made by the hardening process.

Mechanical Properties :

Hardness HB 200-240
Tensile Strength N/mm² 700-900
Yield Strength
N/mm² 490-550
Elongation L=5D % min.10-15
Modulus of Elasticity (20 °C)  kN/mm² 130



Physical Properties :

Electrical Conductivity % 52
Coefficient of Thermal Expansion 1/K 17•10-6
(273-573 K) K  
Thermal Conductivity (20 °C) W/mK 200-230
Density g/cm3 8.75


Available Sizes: Extruded round dia.10-dia.120 mm bars, and various flat bars. Max. flat size: 400x100x2000 mm. Could also be cast and forged as per the customer's specifications.
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