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

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

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

Element Min Max Similar

Mechanical Properties of steel grade 40 ChNL

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)
139 (≥) 674 (≥) 41 21 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade 40 ChNL

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
11 - -     0.13 -  
379 836 - 34.3 433   -  
264 - 43 32.2   222 433

Heat Treatment of steel grade 40 ChNL

Heat treated : 1166°C - 1528°C

Technological Curves of steel grade 40 ChNL

Cross Reference Table (Equivalent Grade) of 40 ChNL

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