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Russia GOST 20DHL Steel castings. General specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20DHL / 20DHL
Category Grade Standard Region/Area Standard Content
Metals 20DHL GOST 977 Russia Steel castings. General specifications

Chemical composition(mass fraction)(wt.%) of the 20DHL

Element Min Max Similar

Mechanical Properties of steel grade 20DHL

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)
342 (≥) 298 (≥) 33 43 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade 20DHL

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 - -     0.43 -  
854 666 - 43.3 442   -  
525 - 32 13.2   311 322

Heat Treatment of steel grade 20DHL

Heat treated : 1714°C - 1533°C

Technological Curves of steel grade 20DHL

Cross Reference Table (Equivalent Grade) of 20DHL

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