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HFS 304S31


HFS 304S31 material is B.S. BS 3605-1 Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes.

Chemical composition of HFS 304S31, HFS 304S31 mechanical properties, HFS 304S31 datasheet, HFS 304S31 equivalent grade, Heat treatment and temperature process of HFS 304S31.


HFS 304S31 property sheet

HFS 304S31 Spec.

B.S. BS 3605-1
Austenitic stainless steel pipes and tubes for pressure purposes. Specification for seamless tubes

Chemical Composition of HFS 304S31

C: Max 0.07
Si: Max 1.00
Mn: Max 2.00
P: Max 0.045
S: Max 0.03
Cr: 17.00 19.00
Mo: Max Min
Ni: 8.00 11.00

Mechanical Properties of HFS 304S31

Rp0.2 (MPa) 772 (≥)
Rm (MPa) 996 (≥)
AKV (J) 33
A (%) 14
Z (%) 31
Hardness HBW 233

HFS 304S31 shape and dimensions

HFS 304S31 Round bar: 1mm-800mm
HFS 304S31 Square bar: 10mm * 10mm-600mm *600mm
HFS 304S31 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
HFS 304S31 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
HFS 304S31 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
HFS 304S31 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes