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55Si2Mn

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65Mn 55Si2MnB
#55Si2Mn

Description

China GBT 55Si2Mn China structural steel and alloy steel and 55Si2Mn Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 55Si2Mn
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 55Si2Mn GBT China China structural steel and alloy steel
ML20CrMoA
ML30CrMoA
ML35CrMoA
ML42CrMoA
ML38CrA
ML40CrMoA
GB 65
GB 70
GB 85
65Mn

Chemical composition(mass fraction)(wt.%) of the 55Si2Mn

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

Mechanical Properties of steel grade 55Si2Mn

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)
443 (≥) 512 (≥) 21 24 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade 55Si2Mn

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
42 - -     0.34 -  
491 176 - 41.3 443   -  
884 - 23 34.2   223 233

Heat Treatment of steel grade 55Si2Mn

Heat treated : 1451°C - 1781°C

Technological Curves of steel grade 55Si2Mn

Cross Reference Table (Equivalent Grade) of 55Si2Mn

Grade Standard Country Application
55Si2Mn GBT China China structural steel and alloy steel
55Si2MnB GBT China China structural steel and alloy steel
65Mn 55Si2MnB
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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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