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P 345 NGJ4

France AFNOR NF P345NGJ4 Steel products. Fine grain weldable steels for the transportation of dangerous products. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: P345NGJ4 / P 345 NGJ4
Category Grade Standard Region/Area Standard Content
Metals P 345 NGJ4 NF A36-215 France Steel products. Fine grain weldable steels for the transportation of dangerous products. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the P 345 NGJ4

Element Min Max Similar
V - 0.1000 -
Si - 0.5000 -
S - 0.0100 -
P - 0.0200 -
Ni - 0.5000 -
Nb - 0.0500 -
Mo - 0.0800 -
Mn 0.9000 1.7000 -
Cu - 0.3000 -
Cr - 0.3000 -
C - 0.1800 -
Al 0.0200 - -

Mechanical Properties of steel grade P 345 NGJ4

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)
644 (≥) 755 (≥) 11 13 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade P 345 NGJ4

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
31 - -     0.44 -  
633 837 - 31.3 332   -  
211 - 43 12.2   113 424

Heat Treatment of steel grade P 345 NGJ4

Heat treated : 1324°C - 1921°C

Technological Curves of steel grade P 345 NGJ4

Cross Reference Table (Equivalent Grade) of P 345 NGJ4

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