Resistance Welding Alloys
Resistance Welding Alloys

Huys offers the full range of copper and refractory resistance welding alloys for resistance welding components as specified by RWMA and ISO standards. We can also supply bronze, brass, and other metals as needed. The following is a brief summary of the most common alloy requests we receive.

Group A: Copper-Based Resistance Welding Alloys
  • RWMA Class 1
    • C15000 Zirconium Copper (CuZr)
  • RWMA Class 2:
    • C18150 Chromium Zirconium Copper (CCZ or CuCrZr)
    • C18200 Chromium Copper (CuCr)
  • RWMA Class 3
    • C18000 Nickel Silicon Chromium Copper (CuNiSiCr) (Beryllium Free)
    • C17510 Nickel Beryllium Copper (CuNiBe)
  • RWMA Class 4
    • C17200 Beryllium Copper (CuBe)
Group B: Refractory Metals
  • RWMA Class 10 (10.74450) Copper Tungsten (45% copper, 55% tungsten)
  • RWMA Class 11 (11.74400) Copper Tungsten (25% copper, 75% tungsten)
  • RWMA Class 12 (12.74350) Copper Tungsten (20% copper, 80% tungsten)
  • RWMA Class 13 (13.74300) Tungsten
  • RWMA Class 14 (14.42300) Molybdenum
Group C: Specialty Metals
  • RWMA Class 20 (C15760) Aluminum Oxide (Dispersion Strengthened) Copper (CuAl oxide)