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Description

China GBT 20MnMoBH China structural steel and alloy steel and 20MnMoBH Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 20MnMoBH
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 20MnMoBH GBT China China structural steel and alloy steel
30CrMnMoTiA
30CrNi2MoVA
30SiMn2MoVA
30CrMnSiNi2A
45H
20CrH
40CrH
45CrH
40MnBH
45MnBH

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

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Mo(%) B(%) Ti(%)
0.16-0.22 0.17-0.37 0.90-0.25 0.035 0.035 Max 0.35 0.20-0.30 0.0005-0.0035

Mechanical Properties of steel grade 20MnMoBH

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)
282 (≥) 824 (≥) 42 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade 20MnMoBH

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
43 - -     0.11 -  
348 361 - 24.3 323   -  
725 - 44 11.2   221 324

Heat Treatment of steel grade 20MnMoBH

Heat treated : 1793°C - 1313°C

Technological Curves of steel grade 20MnMoBH

Cross Reference Table (Equivalent Grade) of 20MnMoBH

Grade Standard Country Application
20MnMoBH GBT China China structural steel and alloy steel

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