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Class 3 Beryllium Copper (RWMA Alloy C17510)
Class 3 copper is specifically recommended for projection welding dies, flash and butt welding dies, current carrying shafts and bushings. Class 3 castings are recommended for welder components that carry current, and are under heavy load, including heavy duty offset electrode holders. Class 3 copper is generally recommended for spot welding and seam welding steels having high electrical resistance, such as stainless steels.
Typical Uses
Electrical
Instrument parts, connectors, heavy duty relay parts, conductors, switch parts, fuse clips.
Industrial
Welding equipment parts, die casting plunger tips, high flux electromagnets, thermal transfer plates.
Chemical Composition
(%max., unless shown as range or min.)
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|
Cu |
Al |
Be |
Co |
Fe |
Ni |
Si |
|
Min./Max |
Rem. |
.20 |
.2-.6 |
.3 |
.10 |
1.4-2.2 |
2.0 |
|
Nominal |
97.8 |
- |
.4 |
- |
- |
1.8 |
- |
Other designations:
CMW 100, Mallory 100, C-3, Cl-3, Electroloy TX, H-3, 200/240, Tuffaloy 55, Tuff 55, Weldaloy 60
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