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Romania STAS OLC40 Heat-treated quality carbon steels of machine building. Grades and technical requirements for quality and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: OLC40 / OLC 40
Category Grade Standard Region/Area Standard Content
Metals OLC 40 STAS 880 Romania Heat-treated quality carbon steels of machine building. Grades and technical requirements for quality

Chemical composition(mass fraction)(wt.%) of the OLC 40

Element Min Max Similar
Si 0.1700 0.3700 -
S - 0.0450 -
P - 0.0400 -
Ni - 0.3000 -
Mn 0.5000 0.8000 -
Cu - 0.3000 -
Cr - 0.3000 -
C 0.3700 0.4400 -
As - 0.0500 -

Mechanical Properties of steel grade OLC 40

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)
345 (≥) 483 (≥) 44 44 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade OLC 40

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
31 - -     0.12 -  
762 466 - 34.3 232   -  
144 - 32 13.2   424 314

Heat Treatment of steel grade OLC 40

Heat treated : 1924°C - 1149°C

Technological Curves of steel grade OLC 40

Cross Reference Table (Equivalent Grade) of OLC 40

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