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Bulgaria BDS 65G Spring steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 65G / 65G
Category Grade Standard Region/Area Standard Content
Metals 65G BDS 6742 Bulgaria Spring steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 65G

Element Min Max Similar

Mechanical Properties of steel grade 65G

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)
161 (≥) 255 (≥) 13 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade 65G

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
24 - -     0.24 -  
637 128 - 32.3 322   -  
724 - 12 42.2   231 322

Heat Treatment of steel grade 65G

Heat treated : 1377°C - 1213°C

Technological Curves of steel grade 65G

Cross Reference Table (Equivalent Grade) of 65G

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