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FStE 420 OS 3

Germany SEW FStE420OS3 Weldable fine grain structural steel for highly stress steel construction. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: FStE420OS3 / FStE 420 OS 3
Category Grade Standard Region/Area Standard Content
Metals FStE 420 OS 3 SEW 085 Germany Weldable fine grain structural steel for highly stress steel construction. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the FStE 420 OS 3

Element Min Max Similar

Mechanical Properties of steel grade FStE 420 OS 3

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)
444 (≥) 564 (≥) 34 43 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade FStE 420 OS 3

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 - -     0.32 -  
767 623 - 13.3 342   -  
716 - 13 43.2   234 412

Heat Treatment of steel grade FStE 420 OS 3

Heat treated : 1325°C - 1652°C

Technological Curves of steel grade FStE 420 OS 3

Cross Reference Table (Equivalent Grade) of FStE 420 OS 3

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