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Bulgaria BDS 40G2 Alloyed constructional steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40G2 / 40 G 2
Category Grade Standard Region/Area Standard Content
Metals 40 G 2 BDS 6354 Bulgaria Alloyed constructional steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 40 G 2

Element Min Max Similar

Mechanical Properties of steel grade 40 G 2

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)
551 (≥) 918 (≥) 13 34 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade 40 G 2

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
42 - -     0.13 -  
561 214 - 33.3 422   -  
276 - 34 44.2   332 443

Heat Treatment of steel grade 40 G 2

Heat treated : 1578°C - 1681°C

Technological Curves of steel grade 40 G 2

Cross Reference Table (Equivalent Grade) of 40 G 2

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