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France AFNOR NF H280M 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: H280M / H 280 M
Category Grade Standard Region/Area Standard Content
Metals H 280 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 280 M

Element Min Max Similar

Mechanical Properties of steel grade H 280 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)
967 (≥) 548 (≥) 21 13 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade H 280 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
43 - -     0.42 -  
246 866 - 14.3 423   -  
937 - 21 12.2   313 213

Heat Treatment of steel grade H 280 M

Heat treated : 1789°C - 1395°C

Technological Curves of steel grade H 280 M

Cross Reference Table (Equivalent Grade) of H 280 M

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