4J458

Other

4J458 / (4J58)

4J458 grade supplied by Shanxi Youte Steel (jlhsteel.net).

Chemical Composition (%)

C	0.03
SI	0.25
MN	0.6
P	0.015
S	0.015
NI	57.5

Available Forms

Bar, Plate, Tube, Forging

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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