Cu-OF
CW008AOxygen-free high-conductivity copper. 99.95% Cu min with max 0.001% O — eliminates hydrogen embrittlement risk during welding/brazing in reducing atmospheres. Used for vacuum electronics, waveguides, particle accelerator components, cryogenic systems, and applications where welding in H2-containing atmospheres is required.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS C10200 | C10200 | REF |
| 🇪🇺 | EN | Europe | Cu-OF | CW008A | 100% |
| 🇬🇧 | BS | United Kingdom | C103 | — | 95% |
Sources: ASTM B152, EN 13601, BS 1172
Mechanical properties
Compatibility verdict
Cu-OF and C103: 95% composition match
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