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France AFNOR NF S420N 可焊接细晶粒结构钢热轧产品 - 第2部分:正火轧制钢的交货条件。 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S420N / S 420 N
Category Grade Standard Region/Area Standard Content
Metals S 420 N NF EN 10113-2 France 可焊接细晶粒结构钢热轧产品 - 第2部分:正火轧制钢的交货条件。

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

Element Min Max Similar
V - 0.2200 -
Ti - 0.0600 -
Si - 0.6500 -
S - 0.0300 -
P - 0.0350 -
Ni - 0.8500 -
Nb - 0.0600 -
N - 0.0270 -
Mo - 0.1300 -
Mn 0.9500 1.8000 -
Cu - 0.6000 -
Cr - 0.3500 -
CEV - 0.4800 -
C - 0.2200 -
Al 0.0150 - -
V - 0.2000 -
Ti - 0.0300 -
Si - 0.6000 -
S - 0.0300 -
P - 0.0350 -
Ni - 0.8000 -
Nb - 0.0500 -
N - 0.0250 -
Mo - 0.1000 -
Mn 1.0000 1.7000 -
Cu - 0.7000 -
Cr - 0.3000 -
C - 0.2000 -
Al 0.0200 - -

Mechanical Properties of steel grade S 420 N

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)
364 (≥) 792 (≥) 44 23 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade S 420 N

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 - -     0.42 -  
165 676 - 11.3 241   -  
958 - 11 22.2   334 312

Heat Treatment of steel grade S 420 N

Heat treated : 1838°C - 1729°C

Technological Curves of steel grade S 420 N

Cross Reference Table (Equivalent Grade) of S 420 N

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