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KS STR309

STR309


STR309 material is KS D 3731 (2002) Heat - resisting steel bars KS D 3732 (2002) Heat - resisting steel plates and sheets Heat - resisting steel plates and sheets.

Chemical composition of STR309, STR309 mechanical properties, STR309 datasheet, STR309 equivalent grade, Heat treatment and temperature process of STR309.


STR309 property sheet

STR309 Spec.

KS D 3731 (2002)
Heat - resisting steel bars
KS D 3732 (2002)
Heat - resisting steel plates and sheets

Related Materials

STR309

Chemical Composition of STR309

C: Max 0.20
Si: Max 1.00
Mn: Max 2.00
P: Max 0.040
S: Max 0.030
Cr: 22.00 24.00
Ni: 12.00 15.00
Mo: Max Min
N: Max Min

Mechanical Properties of STR309

Rp0.2 (MPa) 281 (≥)
Rm (MPa) 123 (≥)
AKV (J) 21
A (%) 42
Z (%) 24
Hardness HBW 143

STR309 shape and dimensions

STR309 Round bar: 1mm-800mm
STR309 Square bar: 10mm * 10mm-600mm *600mm
STR309 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
STR309 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
STR309 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
STR309 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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