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SK70

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SK6 TC70
#SK70

Description

Japan JIS SK70 Carbon tool steel and SK70 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SK70
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SK70 JIS Japan Carbon tool steel
SK95
SK4
SK90
TC90
SK85
SK5
SK80
TC80
SK75
SK6

Chemical composition(mass fraction)(wt.%) of the SK70

C(％) Si(％) Mn(％) P(％) S(％)
0.65-0.75 0.15-0.35 0.15-0.50 Max 0.030 Max 0.030

Mechanical Properties of steel grade SK70

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)
445 (≥) 256 (≥) 44 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade SK70

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
24 - -     0.33 -  
928 644 - 33.3 243   -  
994 - 32 12.2   332 113

Heat Treatment of steel grade SK70

Heat treated : 1221°C - 1154°C

Technological Curves of steel grade SK70

Cross Reference Table (Equivalent Grade) of SK70

Grade Standard Country Application
SK70 JIS Japan Carbon tool steel
SK6 TC70
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Jiangyou Longhai Special Steel Co.,Ltd.
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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