CuCoNiBe / C-17510 (CW103C)
CuCoNiBe is a precipitation-hardened copper-cobalt-nickel-beryllium alloy manufactured through controlled hot forging and age-hardening processes. Combining exceptionally high mechanical strength and surface hardness with superior thermal and electrical conductivity, it bridges the performance gap between high-conductivity copper alloys and conventional tool steels. This alloy delivers outstanding resistance to thermal fatigue, mechanical wear, and plastic deformation under extreme contact pressures and elevated operating temperatures.
Specifications: DIN: 2.1285 | EN: CW103C / CW104C | ASTM: C17500 / C17510 | RWMA: CLASS III
Chemical Composition:
Cobalt (Co) + Nickel (Ni): 2.0% – 2.8%
Beryllium (Be): 0.4% – 0.7%
Copper (Cu): Balance
Mechanical Properties:
Tensile Strength (Rm): 700 – 950 N/mm²
Yield Strength (Rp 0.2): 500 – 750 N/mm²
Hardness: 200 – 280 HB (20 – 30 HRC)
Physical Properties:
Electrical Conductivity: 45 – 60% IACS
Thermal Conductivity: 210 – 250 W/m·K
Max Working Temperature: 500 °C
Applications:
Resistance Welding (RWMA Class III): Heavy-duty spot, projection, flash, and butt welding electrodes, seam welding discs, and current-carrying shafts—specifically engineered for welding stainless steel, high-strength steels, and nickel alloys under high electrode pressures.
Plastic Injection & Blow Molding: High-conductivity mold inserts, core pins, cavities, hot runner nozzles, and pinch-off blades designed to accelerate heat dissipation and significantly reduce molding cycle times.
Die-Casting & Metallurgy: Plunger tips for cold-chamber aluminum die-casting machines and wear-resistant continuous casting mould components.
Electrical & Power Engineering: High-load switchgear contacts, generator rotor wedges, slip-ring assemblies, and current-carrying structural components operating under high mechanical and thermal stress.
