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France AFNOR NF S250Si Cold formed steel product. Drawn bars and peeled-roller polished round bars. Mechanical properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: S250Si / S 250 Si
Category Grade Standard Region/Area Standard Content
Metals S 250 Si 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 Si

Element Min Max Similar
Si 0.1000 0.4000 -
S 0.2500 0.3200 -
P - 0.1000 -
Mn 0.9000 1.4000 -
C - 0.1400 -
Si 0.1000 0.4000 -
S 0.2500 0.3200 -
P - 0.1000 -
Mn 0.9000 1.4000 -
C - 0.1400 -

Mechanical Properties of steel grade S 250 Si

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)
611 (≥) 938 (≥) 23 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade S 250 Si

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
13 - -     0.12 -  
928 856 - 32.3 132   -  
264 - 22 34.2   121 231

Heat Treatment of steel grade S 250 Si

Heat treated : 1295°C - 1783°C

Technological Curves of steel grade S 250 Si

Cross Reference Table (Equivalent Grade) of S 250 Si

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