JIS G4304 or JIS G4305 Austenitic SUS317LN stainless steel plate/coil

JIS G4304 or JIS G4305 Austenitic SUS317LN stainless steel plate/coil

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Description

Chemical Composition and Mechanical Properties of SUS317LN Stainless Steel

SUS317LN is a low-carbon, nitrogen-enhanced austenitic stainless steel with the following composition and properties:

Element Percentage
Carbon ≤0.03%
Chromium 18.00-20.00%
Nickel 11.00-15.00%
Molybdenum 3.00-4.00%
Nitrogen 0.10-0.22%

Mechanical Properties:

Property Value
Yield Strength (min) 205 MPa
Tensile Strength (min) 515 MPa
Elongation (min) 40%

Applications and Industries Using SUS317LN

SUS317LN is used in various industries due to its excellent corrosion resistance:

  1. Chemical and petrochemical processing
  2. Pulp and paper industry
  3. Food processing equipment
  4. Marine applications
  5. Pharmaceutical manufacturing
  6. Oil and gas sourcing

Manufacturing Process of SUS317LN Stainless Steel

The manufacturing process of SUS317LN typically involves:

  1. Melting raw materials in an electric arc furnace
  2. Refining the molten metal using AOD or VOD processes
  3. Continuous casting into slabs
  4. Hot rolling to reduce thickness
  5. Cold rolling to achieve final dimensions
  6. Solution annealing at 1050-1150°C, followed by rapid cooling

Comparison of SUS317LN with Other Stainless Steel Grades

Grade Molybdenum Content Nitrogen Content Corrosion Resistance
SUS317LN 3.00-4.00% 0.10-0.22% Excellent
SUS316LN 2.00-3.00% 0.10-0.16% Very Good
SUS304LN – 0.10-0.16% Good

SUS317LN offers superior corrosion resistance and strength compared to SUS316LN and SUS304LN due to its higher molybdenum and nitrogen content.

Corrosion Resistance and Heat Treatment of SUS317LN

SUS317LN exhibits excellent corrosion resistance:

  • Highly resistant to pitting and crevice corrosion
  • Suitable for use in marine environments
  • Resistant to many chemicals and acids

Heat treatment:

  • Solution annealing: 1050-1150°C, followed by rapid cooling
  • Provides resistance to sensitization and intergranular corrosion

At HL Steel Company, we offer high-quality SUS317LN stainless steel products tailored to meet your specific industrial needs, ensuring superior performance in corrosive environments and high-temperature applications.

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