T6

Other

Tungsten-type high-speed steel. (ASTM A600; equiv ASTM A600 / DIN 1.3355 / JIS SKH2 / GB W18Cr4V). Nominal values—confirm mill certificate.

Chemical Composition (%)

C	0.72
W	18
CR	3.75
V	2.4
CO	11
P	0.03
S	0.03

Mechanical Properties

Hardness(annealed):≤302 HB;Hardness(hardened):65-68 HRC

Chinese Standard

ASTM A600 T6

Equivalent Standards

ASTM A600

Applications

钨系高速钢。,Bar

Available Forms

Nickel/cobalt-base superalloy retaining high strength, creep and corrosion resistance at extreme temperature. Cobalt (≈12%) raises hot corrosion and wear resistance. Used in gas-turbine blades, aero-engine hot sections, combustors and advanced energy systems.

Uses

Solution treated 1050–1250 °C and aged (≈700–900 °C) to precipitate γ′/γ″ strengtheners; processed via vacuum induction + VAR/ESR for cleanliness.

Heat Treatment

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.

Precautions

DIN 1.3355 / JIS SKH2 / GB W18Cr4V

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T6