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Global 企业标准 SMH421 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SMH421 / SMH 421
Category Grade Standard Region/Area Standard Content
Metals SMH 421 -- Global

Chemical composition(mass fraction)(wt.%) of the SMH 421

Element Min Max Similar

Mechanical Properties of steel grade SMH 421

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)
745 (≥) 738 (≥) 14 31 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade SMH 421

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
11 - -     0.34 -  
262 394 - 42.3 412   -  
388 - 41 43.2   211 244

Heat Treatment of steel grade SMH 421

Heat treated : 1744°C - 1517°C

Technological Curves of steel grade SMH 421

Cross Reference Table (Equivalent Grade) of SMH 421

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