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317l Stainless Steel Sheet & Plate

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317l Stainless Steel Sheet & Plate (UNS S31703,1.4438)

317L stainless steel sheet and plate are high-performance materials designed to meet demanding industrial applications. With enhanced corrosion resistance, mechanical strength, and durability, they are a preferred choice across various industries such as chemical processing, petrochemical, and marine environments.

 

Key Features of 317L Stainless Steel Sheet & Plates

  1. Corrosion Resistance: Superior resistance to chemical and chloride-induced corrosion due to high molybdenum content.
  2. Low Carbon Content: Enhanced weldability and reduced risk of sensitization.
  3. High Strength: Excellent mechanical strength and toughness at various temperatures.
  4. Heat resistance: Ensures stability and performance in high-temperature situations.
  5. Fabrication-Friendly: Easy to machine, form, and weld.
  6. Durability: Long-lasting with resistance to pitting, crevice corrosion, and stress cracking.
  7. Applications: Ideal for chemical processing, marine environments, and pharmaceutical industries.

Technical Specifications:

  • UNS Number: S31703
  • DIN/EN Designation: 1.4438
  • Standards Compliance: ASTM A240/A240M

Available Thickness

3/16″1/4″5/16″3/8″1/2″5/8″3/4″7/8″1″1 1/8″
4.8mm6.3mm7.9mm9.5mm12.7mm15.9mm19mm22.2mm25.4mm28.6mm
1 1/4″1 1/2″1 3/4″2″2 1/4″2 1/2″2 3/4″3″3 1/2″4″
31.8mm38.1mm44.5mm50.8mm57.2mm63.5mm69.9mm76.2mm88.9mm101.6mm
317l-stainless-steel-sheet-plate

Application

  • Automotive
  • Chemical and Pharmaceutical
  • Fertilizer
  • Food Processing and Handling
  • Manufacturing
  • Mining
  • Oil & Gas
  • Phosphate Mining

Standard

  • ASTM A240 / A240M
  • ASTM A276 / A276M
  • ASTM A312 / A312M
  • ISO 15510
  • EN 10088-2
  • IN 10204
  • HE G4304
  • HE G4305
  • ASME SA240 / SA240M
  • ASME SA312 / SA312M

Corrosion Resistance

  • High Molybdenum Content: The increased molybdenum content in 317L significantly enhances its resistance to chlorides and acidic environments. This makes it ideal for applications in coastal areas and marine environments where seawater exposure is a concern.
  • Superior Pitting and Crevice Corrosion Resistance: The alloy’s formulation helps prevent pitting and crevice corrosion, which are common in environments with stagnant or localized corrosive solutions.
  • Resistance to Sulfuric Acid: 317L stainless steel offers impressive resistance to sulfuric acid, which is beneficial for industries dealing with acidic by-products or processes.
  • Tolerance to High Temperatures: The alloy maintains its corrosion resistance even at elevated temperatures, ensuring durability and longevity in high-heat applications.

317l Chemical Composition

ElementComposition (%)
Iron (Fe)Balance
Chromium (Cr)18.0 – 20.0
Nickel (Ni)11.0 – 14.0
Molybdenum (Mo)3.0 – 4.0
Carbon (C)≤ 0.030
Manganese (Mn)≤ 2.0
Silicon (Si)≤ 1.0
Phosphorus (P)≤ 0.045
Sulfur (S)≤ 0.030
Nitrogen (N)≤ 0.10

317l Physical Properties

PropertyValue
Density8.03 g/cm³
Melting Point1375 – 1400°C (2500 – 2550°F)
Thermal Conductivity16.3 W/m·K
Specific Heat Capacity500 J/kg·K
Modulus of Elasticity193 – 200 GPa
Poisson’s Ratio0.27 – 0.30
Hardness (Rockwell B)~85 HRB
Tensile Strength515 – 690 MPa (75 – 100 ksi)
Yield Strength205 MPa (30 ksi)
Elongation~40% (in 50 mm length)

317l Mechanical Properties

PropertyValue
Tensile Strength515 – 690 MPa (75 – 100 ksi)
Yield Strength205 MPa (30 ksi)
Elongation~40% (in 50 mm length)
Reduction of Area~50%
Hardness (Rockwell B)~85 HRB
Modulus of Elasticity193 – 200 GPa (28 – 29 × 10^6 psi)

Fabrication Data

Welding

  • Techniques: Suitable for most standard welding methods (TIG, MIG, resistance welding).
  • Filler Material: Use 317L or 316L grade filler rods for best results.
  • Pre/Post Weld Treatment: Preheating generally not required; post-weld annealing is optional for critical applications.

 

Machining

  • Tools: Use carbide-tipped tools for efficient machining.
  • Speed & Feed: Moderate speeds with sufficient cooling and lubrication to prevent work hardening.
  • Recommendations: Avoid interruptions during machining to minimize surface hardening.

 

Forming

  • Techniques: Can be formed using conventional methods, such as bending, pressing, and drawing.
  • Considerations: High strength may require heavier equipment; ensure annealing after severe forming.

 

Annealing

  • Process: Heat to 1010-1120°C (1850-2048°F) and then rapidly freeze.
  • Purpose: Restores flexibility and relieves stress after fabrication.

 

Cutting

  • Methods: Plasma cutting, laser cutting, or shearing are recommended.
  • Tool Maintenance: Regular sharpening of tools reduces work hardening.

 

Surface Treatment

  • Pickling & Passivation: Improves surface corrosion resistance after fabrication.
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