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 065~323 σb/MPa
Yield Strength 343 σ 0.2 ≥/MPa
Elongation 43 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 198~364 -
HRC 30 -

Physical Properties

Thermal expansion 09-91 e-6/K
Thermal conductivity 53-77 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0372-2063 째C
Density 2505-1598 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