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Bulgaria BDS 30G Alloyed constructional steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 30G / 30 G
Category Grade Standard Region/Area Standard Content
Metals 30 G BDS 6354 Bulgaria Alloyed constructional steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 30 G

Element Min Max Similar

Mechanical Properties of steel grade 30 G

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)
625 (≥) 771 (≥) 13 21 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade 30 G

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 - -     0.13 -  
317 989 - 23.3 432   -  
769 - 21 34.2   332 113

Heat Treatment of steel grade 30 G

Heat treated : 1569°C - 1224°C

Technological Curves of steel grade 30 G

Cross Reference Table (Equivalent Grade) of 30 G

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