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France AFNOR NF H240M Cold-rolled flat products made of high yield strength micro- alloyed steels for cold forming. General delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: H240M / H 240 M
Category Grade Standard Region/Area Standard Content
Metals H 240 M NF A36-232 France Cold-rolled flat products made of high yield strength micro- alloyed steels for cold forming. General delivery conditions

Chemical composition(mass fraction)(wt.%) of the H 240 M

Element Min Max Similar

Mechanical Properties of steel grade H 240 M

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)
831 (≥) 822 (≥) 42 31 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade H 240 M

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 - -     0.44 -  
895 345 - 12.3 223   -  
187 - 24 31.2   124 444

Heat Treatment of steel grade H 240 M

Heat treated : 1712°C - 1742°C

Technological Curves of steel grade H 240 M

Cross Reference Table (Equivalent Grade) of H 240 M

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