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45B

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#45B

Description

China GBT 45B China structural steel and alloy steel and 45B Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 45B
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 45B GBT China China structural steel and alloy steel
45Mn2
50Mn2
20MnV
27SiMn
35SiMn
42SiMn
20SiMn2MoV
25SiMn2MoV
37SiMn2MoV
40B

Chemical composition(mass fraction)(wt.%) of the 45B

C(％) Si(％) Mn(％) B(%)
0.42-0.49 0.17-0.37 0.60-0.90 0.0005-0.0035

Mechanical Properties of steel grade 45B

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)
871 (≥) 813 (≥) 12 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade 45B

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
13 - -     0.21 -  
573 976 - 21.3 223   -  
339 - 12 33.2   242 241

Heat Treatment of steel grade 45B

Heat treated : 1129°C - 1415°C

Technological Curves of steel grade 45B

Cross Reference Table (Equivalent Grade) of 45B

Grade Standard Country Application
45B GBT China China structural steel and alloy steel
40B 50B
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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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