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20 ChN 2 M

Bulgaria BDS 20ChN2M Alloyed constructional steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20ChN2M / 20 ChN 2 M
Category Grade Standard Region/Area Standard Content
Metals 20 ChN 2 M BDS 6354 Bulgaria Alloyed constructional steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 20 ChN 2 M

Element Min Max Similar
W - 0.2000 -
V - 0.0500 -
Ti - 0.0300 -
Si 0.1700 0.3700 -
S - 0.0350 -
P - 0.0350 -
Ni 1.6000 2.0000 -
Mo 0.2000 0.3000 -
Mn 0.4000 0.7000 -
Cu - 0.3000 -
Cr 0.4000 0.6000 -
C 0.1500 0.2200 -

Mechanical Properties of steel grade 20 ChN 2 M

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)
112 (≥) 355 (≥) 33 24 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade 20 ChN 2 M

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 - -     0.22 -  
713 598 - 14.3 322   -  
827 - 23 12.2   331 223

Heat Treatment of steel grade 20 ChN 2 M

Heat treated : 1293°C - 1334°C

Technological Curves of steel grade 20 ChN 2 M

Cross Reference Table (Equivalent Grade) of 20 ChN 2 M

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