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KS STS21

STS21


STS21 material is Carbide for cutting tools.

Chemical composition of STS21, STS21 mechanical properties, STS21 datasheet, STS21 equivalent grade, Heat treatment and temperature process of STS21.


STS21 property sheet

STS21 Spec.

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Chemical Composition of STS21

C 1.00-1.10
Si ≤0.35
Mn ≤0.50
Cr 0.20-0.50
V 0.10-0.25
W 0.50-1.00

Mechanical Properties of STS21

Rp0.2 (MPa) 466 (≥)
Rm (MPa) 727 (≥)
AKV (J) 22
A (%) 12
Z (%) 11
Hardness HBW 141

STS21 shape and dimensions

STS21 Round bar: 1mm-800mm
STS21 Square bar: 10mm * 10mm-600mm *600mm
STS21 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
STS21 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
STS21 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
STS21 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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