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KS STR661

STR661


STR661 material is KS standard austenitic heat resistant steel.

Chemical composition of STR661, STR661 mechanical properties, STR661 datasheet, STR661 equivalent grade, Heat treatment and temperature process of STR661.


STR661 property sheet

STR661 Spec.

Related Materials

STR661

Chemical Composition of STR661

C Max 0.15
Si Max 1.00
Mn Max 2.00
P Max 0.2
S Max 0.15
Cr 17.0-19.0
Ni 8.00-10.00
Mo Max 0.60
W 2.00-3.00
Co 18.5-21.0
Nb 0.75-1.25

Mechanical Properties of STR661

Rp0.2 (MPa) 383 (≥)
Rm (MPa) 758 (≥)
AKV (J) 41
A (%) 32
Z (%) 21
Hardness HBW 131

STR661 shape and dimensions

STR661 Round bar: 1mm-800mm
STR661 Square bar: 10mm * 10mm-600mm *600mm
STR661 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
STR661 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
STR661 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
STR661 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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