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SUS 321 FB


SUS 321 FB material is JIS G 4319 (1991) Stainless steel blooms and billets for forgings Stainless steel blooms and billets for forgings.

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


SUS 321 FB property sheet

SUS 321 FB Spec.

JIS G 4319 (1991)
Stainless steel blooms and billets for forgings

Chemical Composition of SUS 321 FB

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 FB

Rp0.2 (MPa) 614 (≥)
Rm (MPa) 443 (≥)
AKV (J) 11
A (%) 13
Z (%) 22
Hardness HBW 334

SUS 321 FB shape and dimensions

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