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SKT4 Tool steel

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Tool Steel: Special steel suitable for working or processing of material, for handling and measuring workpieces and, for this purpose, exhibiting high hardness and wear resistance and/or toughness.
Product: Alloy tool steel
SKT4 steel product available : SKT4 Steel plates, SKT4 steel sheets, SKT4 round bars, SKT4 steel strip
SKT4 steel standard : JIS G4404,
SKT4 steel example application: Mainly used for hot-rolled mould , eg: Forging die, press die, extrusion.

SKT4 steel surface usual condition:
-- The hot rolled or forged condition (as hot work)
-- The machined (ground, polished, turned, peeled or milled ) condition
-- The cold reduced condition

JIS G4404 SKT4 tool steel chemical composition %

Grade

C

Si max

Mn max

P max

S max

Ni

Cr

Mo

W

V

Co

SKT4

0.50-0.60

0.10-0.40

0.6-0.900

0.030

0.020

1.50-1.80

0.80-1.20

0.35-0.55

-

0.05-0.15

-


JIS G4404 SKT4 tool steel hardness in the hardened and tempered condition

Grade

Annealed hardness

Quenched and tempered hardness of test piece

Temperature ℃

HB max

Quenching temperature℃

Tempering temperature℃

Hardness HV

SKT4

740-800 slow cooling

248

850 oil cooling

500 air cooling

412


JOIN-WIN STEEL keeps enough quantity SKT4 steel in stock each month. We can meet our customer’s further process request like : rolling, bending, cutting ( any size and any shape ) drilling, welding, milling, machining and steel structure.

Other steel grades of Alloy tool steel in standard JIS G4404
SKD1 tool steel for cold rolled mould,
SKD2 tool steel for cold rolled mould,
SKD10 tool steel for cold rolled mould,
SKD11 tool steel for cold rolled mould,
SKD12 tool steel for cold rolled mould,
SKD4 tool steel for hot rolled mould,
SKD5 tool steel for hot rolled mould,
SKD6 tool steel for hot rolled mould,
SKD61 tool steel for hot rolled mould,
SKD62 tool steel for hot rolled mould,
SKD7 tool steel for hot rolled mould,
SKD8 tool steel for hot rolled mould,
SKT3 tool steel for hot rolled mould,
SKT6 tool steel for hot rolled mould

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