308 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 308

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UNS 308

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This page is mainly introduced the 308 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 308,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Chemical compositions, mechanical and physical properties of SAE aluminum casting alloys
  • Steel Garde:308
  • Type:Stainless Steels
  • Country:USA
  • Standard:UNS
  • Standard Number:
    ITEM Standard Number Descriptions
    1 SAE J 452 Chemical compositions, mechanical and physical properties of SAE aluminum casting alloys
  • Metallographic Structure:Austenite
  • Application:Chemical compositions, mechanical and physical properties of SAE aluminum casting alloys

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 19.0  21.0
Ni 10.0  12.0

Mechanical Properties

Tensile strength 179~930 σb/MPa
Yield Strength 753 σ 0.2 ≥/MPa
Elongation 68 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 643~301 -
HRC 30 -

Physical Properties

Thermal expansion 39-78 e-6/K
Thermal conductivity 23-96 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 2055-4664 째C
Density 3604-6414 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)
308 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