200
Alloy Steel200
Nickel alloy 200.
Chemical Composition (%)
| NI | 58 |
|---|---|
| CR | 20 |
| MO | 8 |
| NB | 3.15 |
| FE | 5 |
| CO | 1 |
| C | 0.1 |
Mechanical Properties
Tensile:≥830 MPa;Yield:≥415 MPa;Elongation:≥30%
Equivalent Grades
Nickel 200
Applications
Corrosion/heat service
Available Forms
Bar,Sheet,Wire
Uses
Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Cobalt (≈1%) 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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