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ML20MnB

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ML15MnB⑤ ML35MnB
#ML20MnB

Description

China GBT ML20MnB China structural steel and alloy steel and ML20MnB Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: ML20MnB
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel ML20MnB GBT China China structural steel and alloy steel
ML35Mn
ML37Cr
ML40Cr
ML30CrMo
ML35CrMo
ML42CrMo
ML20B
ML28B
ML35B
ML15MnB⑤

Chemical composition(mass fraction)(wt.%) of the ML20MnB

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) B(%) Al(%)
0.17-0.24 Max 0.40 0.80-1.20 0.035 0.035 — 0.0005-0.0035 0.02

Mechanical Properties of steel grade ML20MnB

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)
566 (≥) 362 (≥) 12 41 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade ML20MnB

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 -  
732 464 - 22.3 443   -  
457 - 31 11.2   312 422

Heat Treatment of steel grade ML20MnB

Heat treated : 1317°C - 1575°C

Technological Curves of steel grade ML20MnB

Cross Reference Table (Equivalent Grade) of ML20MnB

Grade Standard Country Application
ML20MnB GBT China China structural steel and alloy steel
ML15MnB⑤ ML35MnB
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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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