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Description

Austria ONORM St03FK4a Austrian structural steel and St03FK4a Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: St03FK4a
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel St03FK4a ONORM Austria Austrian structural steel
Stl3F
St22F
St23F
St24F
St02FK32
St02FK40
S102FK50
St02FK60
St02FK70
St03FK32

Chemical composition(mass fraction)(wt.%) of the St03FK4a

C(%) Si(%) Mn(%) P(%) S(%)
0.1 0.15 0.20-0.45 0.03 0.030

Mechanical Properties of steel grade St03FK4a

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)
256 (≥) 837 (≥) 12 21 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade St03FK4a

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 - -     0.31 -  
645 479 - 31.3 413   -  
818 - 42 44.2   424 311

Heat Treatment of steel grade St03FK4a

Heat treated : 1796°C - 1428°C

Technological Curves of steel grade St03FK4a

Cross Reference Table (Equivalent Grade) of St03FK4a

Grade Standard Country Application
St03FK4a ONORM Austria Austrian structural steel

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