STS321 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS321

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KS STS321

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This page is mainly introduced the STS321 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of STS321,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
STS321
  • Steel Garde:STS321
  • Type:Special Alloy
  • Country:Korea
  • Standard:KS
  • Application:Austenitic Steel

Cross Reference Table(Equivalent Materials):

Material Standard Country
STS321 KS Korea
STS321TKA KS Korea

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 322~106 σb/MPa
Yield Strength 764 σ 0.2 ≥/MPa
Elongation 70 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 602~264 -
HRC 30 -

Physical Properties

Thermal expansion 11-25 e-6/K
Thermal conductivity 60-63 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 2083-5472 째C
Density 8405-8187 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)
STS321 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