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SUS 431 FB


SUS 431 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 431 FB, SUS 431 FB mechanical properties, SUS 431 FB datasheet, SUS 431 FB equivalent grade, Heat treatment and temperature process of SUS 431 FB.


SUS 431 FB property sheet

SUS 431 FB Spec.

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

Chemical Composition of SUS 431 FB

C: Max 0.20
Si: Max 1.00
Mn: Max 1.00
P: Max 0.04
S: Max 0.03
Cr: 15.00 17.00
Ni: 1.25 2.50
Mo: Max Min
N: Max Min

Mechanical Properties of SUS 431 FB

Rp0.2 (MPa) 165 (≥)
Rm (MPa) 251 (≥)
AKV (J) 34
A (%) 21
Z (%) 44
Hardness HBW 221

SUS 431 FB shape and dimensions

SUS 431 FB Round bar: 1mm-800mm
SUS 431 FB Square bar: 10mm * 10mm-600mm *600mm
SUS 431 FB Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
SUS 431 FB Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
SUS 431 FB Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
SUS 431 FB Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes