JIS G4304 or JIS G4305 Austenitic SUS304J2 stainless steel plate/coil

JIS G4304 or JIS G4305 Austenitic SUS304J2 stainless steel plate/coil

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Description

Chemical Composition and Mechanical Properties of SUS304J2 Stainless Steel

SUS304J2 is an austenitic stainless steel with the following composition and properties:

Element Percentage
Carbon 0.08% max
Chromium 18-20%
Nickel 8-10.5%
Manganese 2% max
Silicon 1% max
Phosphorus 0.045% max
Sulfur 0.03% max

Mechanical Properties:

Property Value
Tensile Strength 515 MPa (min)
Yield Strength 205 MPa (min)
Elongation 40% (min)
Density 7.9 g/cm³
Melting Point 1400-1455°C

Applications and Industries Using SUS304J2

SUS304J2 is widely used in various industries due to its excellent corrosion resistance and mechanical properties:

  1. Food processing equipment
  2. Chemical processing plants
  3. Pharmaceutical industry
  4. Marine applications
  5. Architectural components
  6. Kitchen appliances and utensils

Manufacturing Process of SUS304J2 Stainless Steel

The manufacturing process of SUS304J2 typically involves:

  1. Melting raw materials in an electric arc furnace
  2. Refining the molten metal to remove impurities
  3. Continuous casting into slabs or billets
  4. Hot rolling to reduce thickness
  5. Cold rolling to achieve final dimensions
  6. Annealing and pickling for surface finish

Comparison of SUS304J2 with Other Stainless Steel Grades

Grade Yield Strength (min) Corrosion Resistance Weldability
SUS304J2 205 MPa Excellent Excellent
SUS304 205 MPa Very Good Excellent
SUS316 205 MPa Superior Very Good

SUS304J2 offers improved corrosion resistance compared to regular SUS304, making it suitable for more demanding environments.

Heat Treatment and Processing of SUS304J2

SUS304J2 can be work-hardened and is typically used in the annealed condition. Heat treatment processes include:

  1. Solution annealing: 1010-1120°C, followed by rapid cooling
  2. Stress relief annealing: 200-400°C for 1-2 hours

At HL Steel Company, we offer high-quality SUS304J2 stainless steel products tailored to meet your specific industrial needs, ensuring superior performance and longevity in various applications.

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