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STAS/SR A21

A21


A21 material is Structural steel.

Chemical composition of A21, A21 mechanical properties, A21 datasheet, A21 equivalent grade, Heat treatment and temperature process of A21.


A21 property sheet

A21 Spec.

Related Materials

NA21

Chemical Composition of A21

C Min 0.10
Si Min 0.30
Mn 0.40-1.00
P 0.035
S 0.035
Cr 0.03
Ni 0.1
Cu 0.1

Mechanical Properties of A21

Rp0.2 (MPa) 716 (≥)
Rm (MPa) 781 (≥)
AKV (J) 43
A (%) 24
Z (%) 44
Hardness HBW 431

A21 shape and dimensions

A21 Round bar: 1mm-800mm
A21 Square bar: 10mm * 10mm-600mm *600mm
A21 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
A21 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
A21 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
A21 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

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