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SMn 420 H

Japan JIS SMn420H 指定的淬透性结构钢带 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SMn420H / SMn 420 H
Category Grade Standard Region/Area Standard Content
Metals SMn 420 H JIS G4052 Japan 指定的淬透性结构钢带

Chemical composition(mass fraction)(wt.%) of the SMn 420 H

Element Min Max Similar

Mechanical Properties of steel grade SMn 420 H

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)
752 (≥) 193 (≥) 11 44 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 244

Physical Properties of steel grade SMn 420 H

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
44 - -     0.11 -  
282 514 - 11.3 212   -  
457 - 13 42.2   134 134

Heat Treatment of steel grade SMn 420 H

Heat treated : 1559°C - 1656°C

Technological Curves of steel grade SMn 420 H

Cross Reference Table (Equivalent Grade) of SMn 420 H

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