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Description

Austria ONORM St400S Austrian structural steel and St400S Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: St400S
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel St400S ONORM Austria Austrian structural steel
RC75
RC80
RC85
RC90
RC95
QSt290S
St330S
QSt330S
St370S
QSt370S

Chemical composition(mass fraction)(wt.%) of the St400S

C(%) Si(%) Mn(%) P(%) S(%)
0.24 0.4 0.40-0.70 0.040 0.04

Mechanical Properties of steel grade St400S

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)
488 (≥) 183 (≥) 44 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade St400S

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
11 - -     0.42 -  
436 428 - 21.3 124   -  
812 - 32 11.2   243 312

Heat Treatment of steel grade St400S

Heat treated : 1918°C - 1389°C

Technological Curves of steel grade St400S

Cross Reference Table (Equivalent Grade) of St400S

Grade Standard Country Application
St400S ONORM Austria Austrian structural steel

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