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P 420 ML 2

France AFNOR NF P420ML2 压力平板钢产品-第5部分:可焊接细晶钢,热机械轧制 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P420ML2 / P 420 ML 2
Category Grade Standard Region/Area Standard Content
Metals P 420 ML 2 NF EN 10028-5 France 压力平板钢产品-第5部分:可焊接细晶钢,热机械轧制

Chemical composition(mass fraction)(wt.%) of the P 420 ML 2

Element Min Max Similar
V - 0.1000 -
Ti - 0.0500 -
Si - 0.5000 -
S - 0.0150 -
P - 0.0200 -
Ni - 0.5000 -
Nb+Ti+V - 0.1500 -
Nb - 0.0500 -
N - 0.0200 -
Mo - 0.2000 -
Mn - 1.7000 -
Cr+Cu+Mo - 0.6000 -
CEV - 0.4300 -
C - 0.1600 -
Al 0.0200 - -

Mechanical Properties of steel grade P 420 ML 2

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)
523 (≥) 672 (≥) 31 24 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade P 420 ML 2

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
41 - -     0.21 -  
537 567 - 32.3 322   -  
476 - 42 31.2   134 421

Heat Treatment of steel grade P 420 ML 2

Heat treated : 1745°C - 1635°C

Technological Curves of steel grade P 420 ML 2

Cross Reference Table (Equivalent Grade) of P 420 ML 2

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