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SUS 321


SUS 321 material is JIS G 4312 (2011) Heat-resisting steel plate, sheet and strip Heat-resisting steel plate, sheet and strip.

Chemical composition of SUS 321, SUS 321 mechanical properties, SUS 321 datasheet, SUS 321 equivalent grade, Heat treatment and temperature process of SUS 321.


SUS 321 property sheet

SUS 321 Spec.

JIS G 4312 (2011)
Heat-resisting steel plate, sheet and strip

Chemical Composition of SUS 321

C: Max 0.08
Si: Max 1.00
Mn: Max 2.00
P: Max 0.045
S: Max 0.03
Cr: 17.00 19.00
Ni: 9.00 13.00
Mo: Max Min
N: Max Min
Ti: 5×C% Min

Mechanical Properties of SUS 321

Rp0.2 (MPa) 996 (≥)
Rm (MPa) 733 (≥)
AKV (J) 34
A (%) 43
Z (%) 14
Hardness HBW 241

SUS 321 shape and dimensions

SUS 321 Round bar: 1mm-800mm
SUS 321 Square bar: 10mm * 10mm-600mm *600mm
SUS 321 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
SUS 321 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
SUS 321 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
SUS 321 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes