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GBT 40MnB

40MnB


40MnB material is China structural steel and alloy steel.

Chemical composition of 40MnB, 40MnB mechanical properties, 40MnB datasheet, 40MnB equivalent grade, Heat treatment and temperature process of 40MnB.


40MnB property sheet

40MnB Spec.

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Chemical Composition of 40MnB

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

Mechanical Properties of 40MnB

Rp0.2 (MPa) 394 (≥)
Rm (MPa) 815 (≥)
AKV (J) 11
A (%) 32
Z (%) 24
Hardness HBW 221

40MnB shape and dimensions

40MnB Round bar: 1mm-800mm
40MnB Square bar: 10mm * 10mm-600mm *600mm
40MnB Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
40MnB Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
40MnB Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
40MnB Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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