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SK7

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SK65 SK60
#SK7

Description

Japan JIS SK7 Carbon tool steel and SK7 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SK7
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SK7 JIS Japan Carbon tool steel
TC90
SK85
SK5
SK80
TC80
SK75
SK6
SK70
TC70
SK65

Chemical composition(mass fraction)(wt.%) of the SK7

C(％) Si(％) Mn(％) P(％) S(％)
0.60-0.70 0.15-0.35 0.15-0.50 Max 0.030 Max 0.030

Mechanical Properties of steel grade SK7

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)
311 (≥) 635 (≥) 42 12 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade SK7

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
23 - -     0.23 -  
266 787 - 44.3 142   -  
481 - 32 44.2   222 431

Heat Treatment of steel grade SK7

Heat treated : 1737°C - 1385°C

Technological Curves of steel grade SK7

Cross Reference Table (Equivalent Grade) of SK7

Grade Standard Country Application
SK75 JIS Japan Carbon tool steel
SK70 JIS Japan Carbon tool steel
SK7 JIS Japan Carbon tool steel
SK7M JIS Japan Cold rolled special steel strip
SK65 SK60
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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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