230
High-Temp Steel230
W-strengthened Ni-base, high-temp oxidation resistant. (ASTM B637; equiv UNS N06230 / AMS 5878). Nominal values—confirm mill certificate.
Chemical Composition (%)
| NI | 55 |
|---|---|
| CR | 20 |
| CO | 5 |
| MO | 1 |
| W | 13 |
| LA | 0.005 |
Mechanical Properties
Tensile:≥760 MPa;Yield:≥310 MPa
Chinese Standard
ASTM B637 230
Equivalent Standards
AMS 5878
Equivalent Grades
UNS N06230
Applications
钨强化镍基，耐高温氧化。,"Plate
Available Forms
Sheet"
Uses
Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Cobalt (≈5%) 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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