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Japan JIS SKD61 合金工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SKD61 / SKD 61
Category Grade Standard Region/Area Standard Content
Metals SKD 61 JIS G4404 Japan 合金工具钢

Chemical composition(mass fraction)(wt.%) of the SKD 61

Element Min Max Similar
V 0.8000 1.1500 -
Si 0.8000 1.2000 -
S - 0.0200 -
P - 0.0300 -
Mo 1.0000 1.5000 -
Mn 0.2500 0.5000 -
Cr 4.8000 5.5000 -
C 0.3500 0.4200 -

Mechanical Properties of steel grade SKD 61

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)
734 (≥) 489 (≥) 13 22 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade SKD 61

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
21 - -     0.22 -  
922 369 - 42.3 213   -  
114 - 13 24.2   441 411

Heat Treatment of steel grade SKD 61

Heat treated : 1461°C - 1736°C

Technological Curves of steel grade SKD 61

Cross Reference Table (Equivalent Grade) of SKD 61

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