NiCr21Mo
High-Temp SteelNiCr21Mo / 2.4858
NiCr21Mo grade supplied by Shanxi Youte Steel (jlhsteel.net).
Chemical Composition (%)
| C | 0.025 |
|---|---|
| SI | 0.5 |
| MN | 1 |
| P | 0.02 |
| S | 0.015 |
| CR | 19.5 |
| NI | 38 |
| CU | 1.5 |
Available Forms
Bar, Forging, Sheet, Wire
Uses
Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. 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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