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KS STR21

STR21


STR21 material is KS D 3732 (2002) Heat - resisting steel plates and sheets Heat - resisting steel plates and sheets.

Chemical composition of STR21, STR21 mechanical properties, STR21 datasheet, STR21 equivalent grade, Heat treatment and temperature process of STR21.


STR21 property sheet

STR21 Spec.

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

Related Materials

STR21

Chemical Composition of STR21

C: Max 0.10
Si: Max 1.50
Mn: Max 1.00
P: Max 0.04
S: Max 0.03
Cr: 17.00 21.00
Ni: Max 0.60
Mo: Max Min
N: Max Min
Al: 2.00 4.00

Mechanical Properties of STR21

Rp0.2 (MPa) 765 (≥)
Rm (MPa) 454 (≥)
AKV (J) 11
A (%) 44
Z (%) 14
Hardness HBW 433

STR21 shape and dimensions

STR21 Round bar: 1mm-800mm
STR21 Square bar: 10mm * 10mm-600mm *600mm
STR21 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
STR21 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
STR21 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
STR21 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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