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20 ChGNTR

Bulgaria BDS 20ChGNTR Alloyed constructional steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20ChGNTR / 20 ChGNTR
Category Grade Standard Region/Area Standard Content
Metals 20 ChGNTR BDS 6354 Bulgaria Alloyed constructional steels. Designations and technical requirements

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

Element Min Max Similar

Mechanical Properties of steel grade 20 ChGNTR

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)
291 (≥) 847 (≥) 44 24 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade 20 ChGNTR

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 - -     0.12 -  
359 741 - 22.3 123   -  
313 - 14 33.2   212 323

Heat Treatment of steel grade 20 ChGNTR

Heat treated : 1828°C - 1941°C

Technological Curves of steel grade 20 ChGNTR

Cross Reference Table (Equivalent Grade) of 20 ChGNTR

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