ISO 21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO 21

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ISO ISO 21

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This page is mainly introduced the ISO 21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO 21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ISO standard thermal deformation of stainless steel
  • Steel Garde:ISO 21
  • Type:Special Alloy
  • Country:ISO
  • Standard:ISO
  • Application:ISO standard thermal deformation of stainless steel

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 421~498 σb/MPa
Yield Strength 605 σ 0.2 ≥/MPa
Elongation 77 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 596~894 -
HRC 30 -

Physical Properties

Thermal expansion 24-72 e-6/K
Thermal conductivity 26-12 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8803-8867 째C
Density 5051-2839 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
ISO 21 Special Alloy Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download