Copper-Nickel-Beryllium (C17510)

Class 3

Class 3 C17510 is specifically recommended for projection welding dies, flash and butt welding dies, current carrying shafts, and bushings. Since they have higher strength than Class 2, C17510 is recommended for highly stressed welder structural current carrying members and heavy duty offset electrode holders.

Class 3 C17510 is generally recommended for spot welding and seam welding steels, such as stainless steel, since it has high electrical resistance. The C17510 Alloy is heat treatable.

The most common uses for C17510 are in those applications that need a lot of conductivity of temperature or electricity. Its ultimate tensile strength is 140 ksi while its hardness is RB 100. The conductivity of C17510 is about 45-60% of regular copper.

Fabrication Properties

The fabrication properties of beryllium copper alloy C17510 include:

  • Cold Working
  • Hot Working
  • Welding
  • Forging


Welding processes such as brazing, soldering, gas shielded arc welding, butt welding, seam welding, coated metal arc welding, and spot welding are recommended for C17510 copper alloy. Oxyacetylene welding is not recommended for this alloy. C17510 copper alloys can be hot worked between 648 and 885 degrees Celsius.

C17510 beryllium copper alloys are highly preferred because they offer corrosion resistance, and its copper properties are high performance and high strength.

Health Hazard Information for Users of Beryllium Copper Alloys (MSDS)

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Applications of Beryllium Copper

  • Resistance welding
  • Plastic injection mold tooling
  • Oil and gas
  • Aerospace
  • Electronics and telecommunications
  • Foundry products
  • Robotics