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410S21 720


410S21 720 material is B.S. BS 1506 Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications.

Chemical composition of 410S21 720, 410S21 720 mechanical properties, 410S21 720 datasheet, 410S21 720 equivalent grade, Heat treatment and temperature process of 410S21 720.


410S21 720 property sheet

410S21 720 Spec.

B.S. BS 1506
Specification for carbon, low alloy and stainless steel bars and billets for bolting material to be used in pressure retaining applications

Chemical Composition of 410S21 720

C: 0.09 0.15
Si: Max 1.00
Mn: Max 1.00
P: Max 0.04
S: Max 0.03
Cr: 11.50 13.50
Mo: Max Min
Ni: Max 1.00

Mechanical Properties of 410S21 720

Rp0.2 (MPa) 354 (≥)
Rm (MPa) 934 (≥)
AKV (J) 14
A (%) 23
Z (%) 43
Hardness HBW 134

410S21 720 shape and dimensions

410S21 720 Round bar: 1mm-800mm
410S21 720 Square bar: 10mm * 10mm-600mm *600mm
410S21 720 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
410S21 720 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
410S21 720 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
410S21 720 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes