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France AFNOR NF S420M 热轧结构钢产品 - 交货技术条件第4部分:热机械轧制可焊接细晶粒结构钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S420M / S 420 M
Category Grade Standard Region/Area Standard Content
Metals S 420 M NF EN 10025-4 France 热轧结构钢产品 - 交货技术条件第4部分:热机械轧制可焊接细晶粒结构钢

Chemical composition(mass fraction)(wt.%) of the S 420 M

Element Min Max Similar

Mechanical Properties of steel grade S 420 M

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)
371 (≥) 278 (≥) 42 41 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade S 420 M

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
43 - -     0.12 -  
761 955 - 23.3 431   -  
825 - 34 14.2   214 342

Heat Treatment of steel grade S 420 M

Heat treated : 1821°C - 1226°C

Technological Curves of steel grade S 420 M

Cross Reference Table (Equivalent Grade) of S 420 M

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