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20MnMoB

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45MnB 15MnVB
#20MnMoB

Description

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

Datasheet for: Steel Grades:Structure Steel: 20MnMoB
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 20MnMoB GBT China China structural steel and alloy steel
35SiMn
42SiMn
20SiMn2MoV
25SiMn2MoV
37SiMn2MoV
40B
45B
50B
40MnB
45MnB

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

C(％) Si(％) Mn(％) Mo(％) B(%)
0.16-0.22 0.17-0.37 0.90-1.20 0.20-0.30 0.0005-0.0035

Mechanical Properties of steel grade 20MnMoB

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)
794 (≥) 394 (≥) 11 42 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade 20MnMoB

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
22 - -     0.21 -  
783 316 - 44.3 232   -  
347 - 23 23.2   433 412

Heat Treatment of steel grade 20MnMoB

Heat treated : 1672°C - 1349°C

Technological Curves of steel grade 20MnMoB

Cross Reference Table (Equivalent Grade) of 20MnMoB

Grade Standard Country Application
20MnMoB GBT China China structural steel and alloy steel
20MnMoBH GBT China China structural steel and alloy steel
45MnB 15MnVB
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Jiangyou Longhai Special Steel Co.,Ltd.

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