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Germany DIN St33 Welded circular tubes of unalloyed steel without special quality requirements; technical conditions of delivery and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: St33 / St 33
Category Grade Standard Region/Area Standard Content
Metals St 33 DIN 1615 Germany Welded circular tubes of unalloyed steel without special quality requirements; technical conditions of delivery

Chemical composition(mass fraction)(wt.%) of the St 33

Element Min Max Similar
P - 0.0500 -
S - 0.0500 -
Mn 0.2000 0.5000 -
Si - 0.3000 -
C - 0.1500 -
Si - 0.3000 -
S - 0.0500 -
P - 0.0500 -
Mn - 0.5000 -
C - 0.1500 -
Si - 0.3000 -
S - 0.0500 -
P - 0.0500 -
Mn 0.2000 0.5000 -
C - 0.1500 -
Si - 0.3000 -
S - 0.0500 -
P - 0.0500 -
Mn 0.2000 0.5000 -
C - 0.1500 -

Mechanical Properties of steel grade St 33

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)
285 (≥) 511 (≥) 11 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade St 33

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 - -     0.13 -  
988 764 - 22.3 141   -  
818 - 23 44.2   434 344

Heat Treatment of steel grade St 33

Heat treated : 1645°C - 1677°C

Technological Curves of steel grade St 33

Cross Reference Table (Equivalent Grade) of St 33

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