SK4

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#SK4

Description

SK4 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: SK4

Category	Type	Steel Grade
Steel Grades	Tool Steel	SK4
		Stellite X40
		Stellite X90
		Stellite T40
		SK140
		SK1
		SK120
		SK2 TC120
		SK105
		SK3 TC105
		SK95

Chemical composition(mass fraction)(wt.%) of the SK4

C ≤	Si ≤	Mn ≤	P ≤	S ≤	Cr	Ni
0.9-1.0	0.1-0.35	0.1-0.5	0.03	0.03	0.3	0.25
Mo	Al	Cu	Nb	Ti	V	Ce
		0.25
N	Co	Pb	B	Other

Mechanical Properties of steel grade SK4

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
371 (≥)	686 (≥)	44	42	41	Solution and Aging, Annealing, Ausaging, Q+T,etc	122

Physical Properties of steel grade SK4

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
21	-	-			0.44	-
259	885	-	33.3	442		-
124	-	23	23.2			332	233

Heat Treatment of steel grade SK4

Heat treated : 1385°C - 1877°C

Technological Curves of steel grade SK4

No Curve

Cross Reference Table (Equivalent Grade) of SK4

Grade	Standard	Country	Application
SK4	JIS	Japan	Carbon tool steel
SK4M	JIS	Japan	Cold rolled special steel strip

Available Suppliers

Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com

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SK4