MAR-M 247
Directionally solidified or single-crystal casting alloy for turbine blades operating to 1050 °C. High W and Ta content for creep resistance.
Applicable Standards
- AMS 5593
- UNS N00247
Composition Ranges (wt %)
| Element | Min (%) | Max (%) | Typical |
|---|---|---|---|
| Ni | 56.0 | 100.0 | ~78.0 |
| Cr | 8.0 | 9.0 | ~8.5 |
| Co | 9.0 | 11.0 | ~10.0 |
| W | 9.5 | 10.5 | ~10.0 |
| Ta | 2.5 | 3.5 | ~3.0 |
| Al | 5.4 | 5.6 | ~5.5 |
| Ti | 0.9 | 1.1 | ~1.0 |
| Hf | 1.2 | 1.6 | ~1.4 |
Ni
56.0–100.0%
Cr
8.0–9.0%
Co
9.0–11.0%
W
9.5–10.5%
Ta
2.5–3.5%
Al
5.4–5.6%
Ti
0.9–1.1%
Hf
1.2–1.6%
Typical Applications
- Turbine blades (DS/SX)
- Vanes
- Nozzles
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