Haynes 188
Sheet cobalt alloy with excellent oxidation resistance to 1150 °C and good high-temperature strength. Used in combustion liners and transition ducts.
Applicable Standards
- AMS 5608
- UNS R30188
Composition Ranges (wt %)
| Element | Min (%) | Max (%) | Typical |
|---|---|---|---|
| Co | 35.0 | 100.0 | ~67.5 |
| Cr | 21.0 | 23.0 | ~22.0 |
| Ni | 20.0 | 24.0 | ~22.0 |
| W | 13.0 | 15.0 | ~14.0 |
| Fe | — | 3.0 | ~1.5 |
| La | 0.02 | 0.12 | ~0.07 |
Co
35.0–100.0%
Cr
21.0–23.0%
Ni
20.0–24.0%
W
13.0–15.0%
Fe
0.0–3.0%
La
0.02–0.12%
Typical Applications
- Combustion liners
- Transition ducts
- Thermocouple sheaths
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