SUS 309 STP chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 309 STP

JIS SUS 309 STP

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This page is mainly introduced the SUS 309 STP chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of SUS 309 STP,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Stainless steel pipes

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.08
Si   1.00
Mn   2.00
P   0.045
S   0.03
Cr 22.00  24.00
Ni 12.00  15.00
Mo  
N  

Mechanical Properties

Tensile strength 680~369 σb/MPa
Yield Strength 954 σ 0.2 ≥/MPa
Elongation 79 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 778~303 -
HRC 30 -

Physical Properties

Thermal expansion 52-57 e-6/K
Thermal conductivity 66-17 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 5167-0976 째C
Density 3359-7984 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

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Size Availability

Steel Grade Specification Processing range(mm)
SUS 309 STP 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