304 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 304

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ASTM 304

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This page is mainly introduced the 304 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 304,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings

  • Steel Garde:304
  • Type:Stainless Steels
  • Country:USA
  • Standard:ASTM
  • Standard Number:
    ITEM Standard Number Descriptions
    1 SAE AMS-QQ-S-763B (1998) Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings
    2 SAE AMS-T-6845A (1999) Tubing, Steel, Corrosion-Resistant (S30400), Aerospace Vehicle Hydraulic System 1/8 Hard Condition
    3 SAE AMS-T-8506B (1999) Tubing, Steel, Corrosion-Resistant, (304), Annealed, Seamless and Welded
  • Metallographic Structure:Austenite
  • Application:Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings

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 18.0  20.0
Ni 8.00  10.5
N   0.10

Mechanical Properties

Tensile strength 594~853 σb/MPa
Yield Strength 629 σ 0.2 ≥/MPa
Elongation 29 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 099~332 -
HRC 30 -

Physical Properties

Thermal expansion 57-74 e-6/K
Thermal conductivity 72-67 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 0101-0775 째C
Density 4813-5977 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)
304 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