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

CNS Austenitic 309

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This page is mainly introduced the Austenitic 309 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of Austenitic 309,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
CNS standard heat resistant steel plates
  • Steel Garde:Austenitic 309
  • Type:Special Alloy
  • Country:China
  • Standard:CNS
  • Application:CNS standard heat resistant steel plates

Cross Reference Table(Equivalent Materials):

Material Standard Country
Austenitic 309 CNS China

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 198~284 σb/MPa
Yield Strength 367 σ 0.2 ≥/MPa
Elongation 34 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 612~348 -
HRC 30 -

Physical Properties

Thermal expansion 41-18 e-6/K
Thermal conductivity 01-32 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4838-7960 째C
Density 4645-2285 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)
Austenitic 309 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