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Description

Japan JIS SK75 Carbon tool steel and SK75 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: SK75
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy SK75 JIS Japan Carbon tool steel
SK3
TC105
SK95
SK4
SK90
TC90
SK85
SK5
SK80
TC80

Chemical composition(mass fraction)(wt.%) of the SK75

C(%) Si(%) Mn(%) P(%) S(%)
0.70-0.80 0.15-0.35 0.15-0.50 Max 0.030 Max 0.030

Mechanical Properties of steel grade SK75

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)
247 (≥) 328 (≥) 42 32 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade SK75

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 - -     0.24 -  
645 644 - 34.3 323   -  
764 - 13 32.2   333 122

Heat Treatment of steel grade SK75

Heat treated : 1217°C - 1254°C

Technological Curves of steel grade SK75

Cross Reference Table (Equivalent Grade) of SK75

Grade Standard Country Application
SK75 JIS Japan Carbon tool steel

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