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Bulgaria BDS 50ChFA Spring steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 50ChFA / 50 ChFA
Category Grade Standard Region/Area Standard Content
Metals 50 ChFA BDS 6742 Bulgaria Spring steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 50 ChFA

Element Min Max Similar

Mechanical Properties of steel grade 50 ChFA

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)
614 (≥) 676 (≥) 13 32 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade 50 ChFA

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
13 - -     0.22 -  
163 393 - 14.3 321   -  
493 - 24 42.2   413 314

Heat Treatment of steel grade 50 ChFA

Heat treated : 1562°C - 1371°C

Technological Curves of steel grade 50 ChFA

Cross Reference Table (Equivalent Grade) of 50 ChFA

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