SKD1

Other

SKD1

Specialty steel grade. ie steel. (JIS G4404; equiv ASTM A681 / DIN 1.2379 / JIS SKD11 / GB Cr12MoV). Nominal values—confirm mill certificate.

Chemical Composition (%)

C1.8
CR11
MN0.2
SI0.1
P0.03
S0.03

Mechanical Properties

Hardness(annealed):≤248 HB;Hardness(hardened):60-64 HRC

Chinese Standard

JIS G4404 SKD1

Equivalent Standards

ASTM A681

Equivalent Grades

DIN 1.2379 / JIS SKD11 / GB Cr12MoV

Applications

高铬冷作模具钢。,"Bar

Available Forms

Block"

Uses

Martensitic stainless steel combining moderate corrosion resistance with high strength and hardness after heat treatment. Used for cutlery, surgical instruments, turbine blades, valves, pumps, fasteners and bearings in mildly corrosive environments.

Heat Treatment

Annealing/quench from 980–1050 °C (oil or air) then temper 150–650 °C; lower temper gives higher hardness, higher temper improves toughness.

Precautions

Preheat and post-weld heat treat to avoid hydrogen cracking; soft anneal before heavy machining. Lower corrosion resistance than austenitic grades — not for strong chlorides.

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