CuSn12
CW483KHigh-tin phosphor bronze — the strongest in the CuSn series. 12% Sn for maximum wear resistance and strength among phosphor bronzes. Difficult to cold form. Primarily used as castings or hot-formed products. Used for heavy-duty bearings, worm gears, sliding surfaces, and marine hardware.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS C90800 (cast approx) | C90800 | REF |
| 🇪🇺 | EN | Europe | CuSn12 | CW483K | 100% |
Sources: ASTM B505, EN 1652
Chemical composition comparison (wt%)
Side-by-side: CuSn12 (EN 1652) vs CuSn12 (EN) (EN 1652)
| Element | CuSn12 (EN 1652) | CuSn12 (EN) | Overlap |
|---|---|---|---|
| P | — | 0–0.4% | — |
| Ni | — | 0–0.3% | — |
Mechanical properties
Compatibility verdict
CuSn12 and CuSn12: 100% composition match
Related materials
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