R04220 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of R04220

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AISI R04220

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This page is mainly introduced the R04220 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of R04220,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Niobium (columbium) RRR Grade

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.22
Si   0.40
Mn   0.75
P  
S  
Ni   0.75
Cr   12.50
Al  
Cu  
Ti  
Fe   remaining
N  
Mo   1.00
W   1.00
V   0.22

Mechanical Properties

Tensile strength 338~766 σb/MPa
Yield Strength 093 σ 0.2 ≥/MPa
Elongation 76 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 496~127 -
HRC 30 -

Physical Properties

Thermal expansion 15-66 e-6/K
Thermal conductivity 96-64 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8529-3614 째C
Density 5225-5054 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)
R04220 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