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Bulgaria BDS 45G Alloyed constructional steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 45G / 45 G
Category Grade Standard Region/Area Standard Content
Metals 45 G BDS 6354 Bulgaria Alloyed constructional steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 45 G

Element Min Max Similar
W - 0.2000 -
V - 0.0500 -
Ti - 0.0300 -
Si 0.1700 0.3700 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.3000 -
Mo - 0.1500 -
Mn 0.7000 1.0000 -
Cu - 0.3000 -
Cr - 0.3000 -
C 0.4200 0.5000 -

Mechanical Properties of steel grade 45 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)
588 (≥) 799 (≥) 34 12 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade 45 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
44 - -     0.44 -  
371 497 - 33.3 444   -  
665 - 33 22.2   444 114

Heat Treatment of steel grade 45 G

Heat treated : 1647°C - 1287°C

Technological Curves of steel grade 45 G

Cross Reference Table (Equivalent Grade) of 45 G

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