Stellite 6
Cobalt-chromium-tungsten hardfacing alloy with excellent wear and corrosion resistance. Used as weld overlay in valves, seats, and turbine wear pads.
Applicable Standards
- AMS 5387
- ASTM F75 (similar)
- UNS R30006
Composition Ranges (wt %)
| Element | Min (%) | Max (%) | Typical |
|---|---|---|---|
| Co | 59.0 | 100.0 | ~79.5 |
| Cr | 27.0 | 32.0 | ~29.5 |
| W | 3.5 | 5.5 | ~4.5 |
| C | 0.9 | 1.4 | ~1.15 |
| Ni | — | 3.0 | ~1.5 |
| Mo | — | 1.5 | ~0.75 |
| Fe | — | 3.0 | ~1.5 |
Co
59.0–100.0%
Cr
27.0–32.0%
W
3.5–5.5%
C
0.9–1.4%
Ni
0.0–3.0%
Mo
0.0–1.5%
Fe
0.0–3.0%
Typical Applications
- Valve seats
- Wear pads
- Cutting tools
- Hardfacing
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