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France AFNOR NF S250 Cold formed steel product. Drawn bars and peeled-roller polished round bars. Mechanical properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S250 / S 250
Category Grade Standard Region/Area Standard Content
Metals S 250 NF A37-401 France Cold formed steel product. Drawn bars and peeled-roller polished round bars. Mechanical properties

Chemical composition(mass fraction)(wt.%) of the S 250

Element Min Max Similar
Si - 0.0300 -
S 0.2500 0.3200 -
P - 0.1000 -
Mn 0.9000 1.4000 -
C - 0.1400 -

Mechanical Properties of steel grade S 250

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)
775 (≥) 358 (≥) 24 43 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade S 250

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
33 - -     0.34 -  
553 182 - 14.3 242   -  
331 - 21 33.2   322 421

Heat Treatment of steel grade S 250

Heat treated : 1355°C - 1294°C

Technological Curves of steel grade S 250

Cross Reference Table (Equivalent Grade) of S 250

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