Alloy 20Cb-3
NickelAlloy 20Cb-3 nickel alloy
Alloy 20Cb-3 supplied by Shanxi Youte Steel (jlhsteel.net).
Chemical Composition (%)
| NI | 32 |
|---|---|
| CR | 19 |
| MO | 2 |
| CU | 3 |
| NB | 0.6 |
Chinese Standard
ASTM B463
Equivalent Grades
UNS N08020
Applications
Aerospace, chemical processing, marine, nuclear, heat resistance.
Available Forms
Bar, Plate, Sheet, Tube, Wire, Forging, Pipe
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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