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P 440 NJ4

France AFNOR NF P440NJ4 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: P440NJ4 / P 440 NJ4
Category Grade Standard Region/Area Standard Content
Metals P 440 NJ4 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 440 NJ4

Element Min Max Similar

Mechanical Properties of steel grade P 440 NJ4

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)
681 (≥) 839 (≥) 33 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade P 440 NJ4

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
23 - -     0.32 -  
266 172 - 13.3 443   -  
888 - 34 24.2   414 213

Heat Treatment of steel grade P 440 NJ4

Heat treated : 1339°C - 1878°C

Technological Curves of steel grade P 440 NJ4

Cross Reference Table (Equivalent Grade) of P 440 NJ4

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