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SK4

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SK95 SK90
#SK4

Description

Japan JIS SK4 Carbon tool steel and SK4 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SK4
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SK4 JIS Japan Carbon tool steel
1.3355
SK140
SK1
SK120
SK2
TC120
SK105
SK3
TC105
SK95

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

C(％) Si(％) Mn(％) P(％) S(％)
0.90-1.00 0.15-0.35 0.15-0.50 Max 0.030 Max 0.030

Mechanical Properties of steel grade SK4

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
573 (≥) 637 (≥) 13 21 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

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
22 - -     0.24 -  
578 365 - 44.3 211   -  
312 - 44 44.2   413 411

Heat Treatment of steel grade SK4

Heat treated : 1971°C - 1683°C

Technological Curves of steel grade SK4

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
SK95 SK90
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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...

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