ISO H21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO H21

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ISO ISO H21

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This page is mainly introduced the ISO H21 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ISO H21,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Nickel and nickel alloy forgings

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.08  0.15
Si   1.00
Mn   1.00
P  
S   0.020
Cr 18.00  21.00
Ni remaining 
Co   5.00
Fe   5.00
Ti 0.20  0.60
Cu   0.50

Mechanical Properties

Tensile strength 195~120 σb/MPa
Yield Strength 148 σ 0.2 ≥/MPa
Elongation 91 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 278~972 -
HRC 30 -

Physical Properties

Thermal expansion 77-75 e-6/K
Thermal conductivity 04-95 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1089-6573 째C
Density 2339-9469 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 H21 Stainless Steels 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