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Bulgaria BDS 40ChFL Low alloyed steel castings. Designations and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40ChFL / 40 ChFL
Category Grade Standard Region/Area Standard Content
Metals 40 ChFL BDS 6550 Bulgaria Low alloyed steel castings. Designations

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

Element Min Max Similar
Si 0.2000 0.5000 -
S - 0.0400 -
P - 0.0400 -
Ni - 0.3000 -
Mn 0.5000 0.8000 -
Cu 0.1500 0.3000 -
Cr 1.0000 1.4000 -
C 0.3500 0.4500 -

Mechanical Properties of steel grade 40 ChFL

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)
186 (≥) 984 (≥) 32 42 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade 40 ChFL

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
32 - -     0.23 -  
647 319 - 31.3 212   -  
531 - 11 22.2   222 424

Heat Treatment of steel grade 40 ChFL

Heat treated : 1747°C - 1442°C

Technological Curves of steel grade 40 ChFL

Cross Reference Table (Equivalent Grade) of 40 ChFL

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