Carpenter Pyromet 31
SuperalloyCarpenter Pyromet 31
Proprietary/trade-name steel grade Carpenter Pyromet 31
Chemical Composition (%)
| NI | 38 |
|---|---|
| CR | 10 |
| CO | 0 |
| MO | 0 |
| FE | 0 |
| TI | 0 |
| AL | 0 |
| P | 0.03 |
| S | 0.015 |
Applications
Manufacturer proprietary steel grade (trade name) per maker specification.
Available Forms
Bar, plate, sheet, tube, forgings, strip, wire, powder
Uses
Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Cobalt (≈10%) raises hot corrosion and wear resistance. Used in gas-turbine blades, aero-engine hot sections, combustors and advanced energy systems.
Heat Treatment
Solution treated 1050–1250 °C and aged (≈700–900 °C) to precipitate γ′/γ″ strengtheners; processed via vacuum induction + VAR/ESR for cleanliness.
Precautions
Machining is difficult — use ceramic/PCBN tools, generous coolant and rigid setups. Keep clean (vacuum/inert melting) to avoid inclusions; avoid contamination by low-melting elements.
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