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SUS 321 HTB


SUS 321 HTB material is JIS G 3463 (2012) Stainless steel boiler and heat exchanger tubes Stainless steel boiler and heat exchanger tubes.

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


SUS 321 HTB property sheet

SUS 321 HTB Spec.

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

Chemical Composition of SUS 321 HTB

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 HTB

Rp0.2 (MPa) 315 (≥)
Rm (MPa) 758 (≥)
AKV (J) 22
A (%) 12
Z (%) 33
Hardness HBW 414

SUS 321 HTB shape and dimensions

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