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55Si2MnB

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55Si2Mn 55SiMnVB
#55Si2MnB

Description

China GBT 55Si2MnB China structural steel and alloy steel and 55Si2MnB Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 55Si2MnB
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 55Si2MnB GBT China China structural steel and alloy steel
ML30CrMoA
ML35CrMoA
ML42CrMoA
ML38CrA
ML40CrMoA
GB 65
GB 70
GB 85
65Mn
55Si2Mn

Chemical composition(mass fraction)(wt.%) of the 55Si2MnB

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) B(%)
0.52-0.60 1.50-2.00 0.60-0.90 0.035 0.035 Max 0.35 Max 0.35 0.0005-0.004

Mechanical Properties of steel grade 55Si2MnB

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)
687 (≥) 871 (≥) 24 33 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade 55Si2MnB

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 - -     0.22 -  
736 748 - 22.3 432   -  
962 - 24 23.2   434 334

Heat Treatment of steel grade 55Si2MnB

Heat treated : 1412°C - 1915°C

Technological Curves of steel grade 55Si2MnB

Cross Reference Table (Equivalent Grade) of 55Si2MnB

Grade Standard Country Application
55Si2MnB GBT China China structural steel and alloy steel
55Si2Mn 55SiMnVB
Available Suppliers
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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