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SUS 631


SUS 631 material is JIS G 4311 (2011) Heat-resisting steel bars and wire rods Heat-resisting steel bars and wire rods.

Chemical composition of SUS 631, SUS 631 mechanical properties, SUS 631 datasheet, SUS 631 equivalent grade, Heat treatment and temperature process of SUS 631.


SUS 631 property sheet

SUS 631 Spec.

JIS G 4311 (2011)
Heat-resisting steel bars and wire rods

Chemical Composition of SUS 631

C: Max 0.09
Si: Max 1.00
Mn: Max 1.00
P: Max 0.04
S: Max 0.03
Cr: 16.00 18.00
Ni: 6.50 7.75
Mo: Max Min
N: Max Min
Al: 0.75 1.50

Mechanical Properties of SUS 631

Rp0.2 (MPa) 565 (≥)
Rm (MPa) 298 (≥)
AKV (J) 33
A (%) 11
Z (%) 33
Hardness HBW 424

SUS 631 shape and dimensions

SUS 631 Round bar: 1mm-800mm
SUS 631 Square bar: 10mm * 10mm-600mm *600mm
SUS 631 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
SUS 631 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
SUS 631 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
SUS 631 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes