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 348~751 σb/MPa
Yield Strength 915 σ 0.2 ≥/MPa
Elongation 39 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 361~266 -
HRC 30 -

Physical Properties

Thermal expansion 15-31 e-6/K
Thermal conductivity 07-25 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 1200-3355 째C
Density 2907-1880 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