Chromium Copper (18200) and Chromium Zirconium Copper (18150)
18200 18150 Specs MSDS Contact Us
Applications 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
ASTM F9
MIL C-19311
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 |