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Russia GOST 40L Steel castings. General specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40L / 40L
Category Grade Standard Region/Area Standard Content
Metals 40L GOST 977 Russia Steel castings. General specifications

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

Element Min Max Similar
Si 0.2000 0.5200 -
S - 0.0500 -
P - 0.0700 -
Mn 0.4500 0.9000 -
C 0.3700 0.4500 -

Mechanical Properties of steel grade 40L

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)
375 (≥) 317 (≥) 11 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade 40L

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
14 - -     0.23 -  
735 665 - 42.3 411   -  
455 - 33 24.2   433 424

Heat Treatment of steel grade 40L

Heat treated : 1285°C - 1635°C

Technological Curves of steel grade 40L

Cross Reference Table (Equivalent Grade) of 40L

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