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Chromium Copper (18200) and Chromium Zirconium Copper (18150)

chromium coppor 18200Applications for Chromium Copper and Chromium Zirconium Copper

  • Resistance Welding
  • Seam Welding
  • Flash and Butt welding dies
  • Welding Gun Arms
  • Welding platens
  • Circuit Breaker parts
  • Electrical and mechanical power transmission devices
  • Masks for Compact Discs & DVDs
 

Class 2 Chromium Copper (18200)

Specifications (18200)

RWMA Class 2 Copper
UNS C18200

Class 2 Alloy is a superior resistance welding electrode material specifically recommended for high level production spot and seam welding of clean mild steel, low ally steel, low conductivity brasses and bronzes.

Suitable for projection welding dies, seam welder shafts and bearings, flash and butt dies and current carrying structural members.

Available as high strength and high electrical conductivity casting for such use as gun welder arms, welder platen and secondary structural members. Class 2 is also heat treatable.

 

Class 2 Chromium Zirconium Copper (18150)

Specifications (18150)

RWMA Class 2 Copper
UNS C18150

Class 2 copper (18150) Copper Chromium Zirconium is used extensively for cap style resistance welding electrodes. Evidence suggests that it can provide less sticking and resist deformation longer than its copper-chrome counterpart in some specific situations.

 
RWMA Class
(Alloy Number)
Chemical Composition Hardness Conductivity(%) Tensile Strength
Class 2
(18200)
CR.60-1.2 B70-83 80-85 50-70 ksi
Class 2
(18150)
CR.50-1.5
ZR.05-.25
B70-83 80-85 50-70 ksi

Health Hazard Information for Users of Chromium Copper (C18200) and Chromium Zirconium Copper (18150) Alloys (MSDS)

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