High quality special steel supplier.Old rev.

  • Certified Company

    DNV&ABS

  • Certified Company

    ISO 9001:2008

  • R&D Production

    In China
Get a Quote

AISI Grade21

Grade21


Grade21 material is .

Chemical composition of Grade21, Grade21 mechanical properties, Grade21 datasheet, Grade21 equivalent grade, Heat treatment and temperature process of Grade21.


Grade21 property sheet

Grade21 Spec.

Related Materials

Chemical Composition of Grade21

C 0.20-0.30
Si Max 1.00
Mn Max 1.00
P Max 0.040
S Max 0.040
Cr 25.0-29.0
Ni 1.75-3.75
Mo 5.0-6.0
B Max 0.007
other Fe Max 3.00

Mechanical Properties of Grade21

Rp0.2 (MPa) 825 (≥)
Rm (MPa) 584 (≥)
AKV (J) 44
A (%) 31
Z (%) 14
Hardness HBW 314

Grade21 shape and dimensions

Grade21 Round bar: 1mm-800mm
Grade21 Square bar: 10mm * 10mm-600mm *600mm
Grade21 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
Grade21 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
Grade21 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
Grade21 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

  • Ph: +86-1388-0247-006
  • Email: sales@steelss.com

©Longhai Special Steel © 2005-2024