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40MnB

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50B 45MnB
#40MnB

Description

China GBT 40MnB China structural steel and alloy steel and 40MnB Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 40MnB
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 40MnB GBT China China structural steel and alloy steel
20MnV
27SiMn
35SiMn
42SiMn
20SiMn2MoV
25SiMn2MoV
37SiMn2MoV
40B
45B
50B

Chemical composition(mass fraction)(wt.%) of the 40MnB

C(％) Si(％) Mn(％) B(%)
0.37-0.44 0.17-0.37 1.10-1.40 0.0005-0.0035

Mechanical Properties of steel grade 40MnB

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)
571 (≥) 973 (≥) 44 12 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 441

Physical Properties of steel grade 40MnB

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
32 - -     0.24 -  
456 239 - 11.3 331   -  
678 - 43 41.2   243 214

Heat Treatment of steel grade 40MnB

Heat treated : 1895°C - 1522°C

Technological Curves of steel grade 40MnB

Cross Reference Table (Equivalent Grade) of 40MnB

Grade Standard Country Application
40MnB GBT China China structural steel and alloy steel
40MnBH GBT China China structural steel and alloy steel
50B 45MnB
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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