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ISO H21


ISO H21 material is ISO standard heat-resisting alloy.

Chemical composition of ISO H21, ISO H21 mechanical properties, ISO H21 datasheet, ISO H21 equivalent grade, Heat treatment and temperature process of ISO H21.


ISO H21 property sheet

ISO H21 Spec.

Chemical Composition of ISO H21

C Max 0.08
Si Max 1.0
Mn Max 1.0
P Max 0.015
S Max 0.02
Cr 18.0-21.0
Ni Remaining
Cu Max 0.5
Co Max 5.0
Ti 0.20-0.60
other Fe:Max 5.0

Mechanical Properties of ISO H21

Rp0.2 (MPa) 596 (≥)
Rm (MPa) 668 (≥)
AKV (J) 14
A (%) 12
Z (%) 34
Hardness HBW 241

ISO H21 shape and dimensions

ISO H21 Round bar: 1mm-800mm
ISO H21 Square bar: 10mm * 10mm-600mm *600mm
ISO H21 Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
ISO H21 Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
ISO H21 Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
ISO H21 Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

ISO H21 Relevant products

IncoloyA-286 / GH 2132

IncoloyA-286 / GH 2132

IncoloyA-286 GH 2132
IncoloyA-286 / GH 2132

IncoloyA-286 / GH 2132

IncoloyA-286 GH 2132
1.2581 Hot-Work Mould Steel

1.2581 Hot-Work Mould Steel

1 2581(H21, X30WCrV93, SKD5) Hot-Work Mould Steel proper...