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SUS 309 STB


SUS 309 STB material is JIS G 3463 (2012) Stainless steel boiler and heat exchanger tubes Stainless steel boiler and heat exchanger tubes.

Chemical composition of SUS 309 STB, SUS 309 STB mechanical properties, SUS 309 STB datasheet, SUS 309 STB equivalent grade, Heat treatment and temperature process of SUS 309 STB.


SUS 309 STB property sheet

SUS 309 STB Spec.

JIS G 3463 (2012)
Stainless steel boiler and heat exchanger tubes

Chemical Composition of SUS 309 STB

C: Max 0.08
Si: Max 1.00
Mn: Max 2.00
P: Max 0.045
S: Max 0.03
Cr: 22.00 24.00
Ni: 12.00 15.00
Mo: Max Min
N: Max Min

Mechanical Properties of SUS 309 STB

Rp0.2 (MPa) 832 (≥)
Rm (MPa) 557 (≥)
AKV (J) 33
A (%) 12
Z (%) 13
Hardness HBW 432

SUS 309 STB shape and dimensions

SUS 309 STB Round bar: 1mm-800mm
SUS 309 STB Square bar: 10mm * 10mm-600mm *600mm
SUS 309 STB Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
SUS 309 STB Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
SUS 309 STB Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
SUS 309 STB Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes