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Japan JIS SKT3 合金工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SKT3 / SKT 3
Category Grade Standard Region/Area Standard Content
Metals SKT 3 JIS G4404 Japan 合金工具钢

Chemical composition(mass fraction)(wt.%) of the SKT 3

Element Min Max Similar
V - 0.2000 -
Si - 0.3500 -
S - 0.0200 -
P - 0.0300 -
Ni 0.2500 0.6000 -
Mo 0.3000 0.5000 -
Mn - 0.6000 -
Cr 0.9000 1.2000 -
C 0.5000 0.6000 -

Mechanical Properties of steel grade SKT 3

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)
489 (≥) 981 (≥) 24 24 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade SKT 3

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
32 - -     0.14 -  
254 247 - 43.3 323   -  
612 - 31 43.2   311 233

Heat Treatment of steel grade SKT 3

Heat treated : 1751°C - 1424°C

Technological Curves of steel grade SKT 3

Cross Reference Table (Equivalent Grade) of SKT 3

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