High quality special steel supplier.Old rev.

  • Certified Company

    DNV&ABS

  • Certified Company

    ISO 9001:2008

  • R&D Production

    In China
Get a Quote

GBT 45MnB

45MnB


45MnB material is China structural steel and alloy steel.

Chemical composition of 45MnB, 45MnB mechanical properties, 45MnB datasheet, 45MnB equivalent grade, Heat treatment and temperature process of 45MnB.


45MnB property sheet

45MnB Spec.

Related Materials

Chemical Composition of 45MnB

C 0.42-0.49
Si 0.17-0.37
Mn 1.10-1.40
B 0.0005-0.0035

Mechanical Properties of 45MnB

Rp0.2 (MPa) 265 (≥)
Rm (MPa) 249 (≥)
AKV (J) 32
A (%) 44
Z (%) 44
Hardness HBW 132

45MnB shape and dimensions

45MnB Round bar: 1mm-800mm
45MnB Square bar: 10mm * 10mm-600mm *600mm
45MnB Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
45MnB Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
45MnB Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
45MnB Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Our Materials

Why Our Service?

Let’s Start Work
Together

Get a Quote

Quick Contact

©Longhai Special Steel 2025