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BT21

BT21


BT21 material is Carbide for cutting tools.

Chemical composition of BT21, BT21 mechanical properties, BT21 datasheet, BT21 equivalent grade, Heat treatment and temperature process of BT21.


BT21 property sheet

BT21 Spec.

Related Materials

Chemical Composition of BT21

C 0.60-0.70
Si ≤0.40
Mn ≤0.40
Cr 3.50-4.25
Ni ≤0.40
Mo ≤0.70
V 0.40-0.60
W 13.5-14.5
Co ≤1.00
other Cu≤0.20,Sn≤0.05

Mechanical Properties of BT21

Rp0.2 (MPa) 372 (≥)
Rm (MPa) 984 (≥)
AKV (J) 41
A (%) 12
Z (%) 12
Hardness HBW 144

BT21 shape and dimensions

BT21 Round bar: 1mm-800mm
BT21 Square bar: 10mm * 10mm-600mm *600mm
BT21 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
BT21 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
BT21 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
BT21 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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