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E 420 T-Ⅱ

France AFNOR NF E420T-Ⅱ Iron and steel products. High yield strength steel plates for delivery in the treated condition for welded constructions. Grades and types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: E420T-Ⅱ / E 420 T-Ⅱ
Category Grade Standard Region/Area Standard Content
Metals E 420 T-Ⅱ NF A36-204 France Iron and steel products. High yield strength steel plates for delivery in the treated condition for welded constructions. Grades and types

Chemical composition(mass fraction)(wt.%) of the E 420 T-Ⅱ

Element Min Max Similar
V - 0.2000 -
Ti - 0.2000 -
Si - 0.5000 -
S - 0.0150 -
P - 0.0250 -
Ni - 2.0000 -
Nb - 0.0600 -
N2 - 0.0150 -
Mo - 1.0000 -
Mn - 1.5000 -
Cu - 1.5000 -
Cr - 2.0000 -
C - 0.1800 -
B - 0.0050 -
Al - 0.0800 -

Mechanical Properties of steel grade E 420 T-Ⅱ

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)
159 (≥) 849 (≥) 32 34 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade E 420 T-Ⅱ

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
22 - -     0.13 -  
245 186 - 33.3 322   -  
562 - 43 31.2   444 321

Heat Treatment of steel grade E 420 T-Ⅱ

Heat treated : 1351°C - 1932°C

Technological Curves of steel grade E 420 T-Ⅱ

Cross Reference Table (Equivalent Grade) of E 420 T-Ⅱ

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