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KS STR3

STR3


STR3 material is KS D 3731 (2002) Heat - resisting steel bars Heat - resisting steel bars.

Chemical composition of STR3, STR3 mechanical properties, STR3 datasheet, STR3 equivalent grade, Heat treatment and temperature process of STR3.


STR3 property sheet

STR3 Spec.

KS D 3731 (2002)
Heat - resisting steel bars

Related Materials

STR31
STR310
STR35
STR36
STR37
STR38
STR309
STR330
STR3

Chemical Composition of STR3

C: 0.35 0.45
Si: 1.80 2.50
Mn: Max 0.60
P: Max 0.03
S: Max 0.03
Cr: 10.00 12.00
Ni: Max 0.60
Mo: 0.70 1.30
N: Max Min
Cu: Max 0.30

Mechanical Properties of STR3

Rp0.2 (MPa) 818 (≥)
Rm (MPa) 171 (≥)
AKV (J) 11
A (%) 41
Z (%) 22
Hardness HBW 332

STR3 shape and dimensions

STR3 Round bar: 1mm-800mm
STR3 Square bar: 10mm * 10mm-600mm *600mm
STR3 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
STR3 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
STR3 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
STR3 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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