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 446~219 σb/MPa
Yield Strength 767 σ 0.2 ≥/MPa
Elongation 80 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 484~637 -
HRC 30 -

Physical Properties

Thermal expansion 22-34 e-6/K
Thermal conductivity 74-64 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4877-8567 째C
Density 9580-6422 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