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STS440F material is KS D 3706 (2008) Stainless steel bars Stainless steel bars.

Chemical composition of STS440F, STS440F mechanical properties, STS440F datasheet, STS440F equivalent grade, Heat treatment and temperature process of STS440F.

STS440F property sheet

STS440F Spec.

KS D 3706 (2008)
Stainless steel bars

Related Materials


Chemical Composition of STS440F

C: 0.95 1.20
Si: Max 1.00
Mn: Max 1.25
P: Max 0.060
S: Max 0.15
Cr: 16.00 18.00
Ni: Max 0.60
Mo: Max 0.75
N: Max Min

Mechanical Properties of STS440F

Rp0.2 (MPa) 223 (≥)
Rm (MPa) 125 (≥)
AKV (J) 41
A (%) 41
Z (%) 14
Hardness HBW 133

STS440F shape and dimensions

STS440F Round bar: 1mm-800mm
STS440F Square bar: 10mm * 10mm-600mm *600mm
STS440F Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
STS440F Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
STS440F Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
STS440F Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes