About ER 308L Mig Wire

ER 308L MIG wire is a solid stainless steel filler metal designed for welding austenitic stainless steels like 304L and 308L. It offers excellent corrosion resistance, low carbon content for improved weldability, and high ductility, ensuring strong and durable welds in various applications across industries.

ER 308L Mig Wire Chemical Compositions:

The typical chemical composition of ER 308L MIG wire includes:-

  • Carbon (C): 0.03% max
  • Silicon (Si): 0.30-0.65%
  • Manganese (Mn): 1.0-2.5%
  • Phosphorus (P): 0.03% max
  • Sulfur (S): 0.03% max
  • Chromium (Cr): 18.0-21.0%
  • Nickel (Ni): 9.0-11.0%

These elements contribute to the wire’s weldability, corrosion resistance, and mechanical properties, making it suitable for various welding applications.

ER 308L Mig Wire Physical Properties:

  • Density: Typically around 7.9 g/cm³, indicating mass per unit volume.
  • Melting Point: Approximately 1400-1450°C (2552-2642°F), transition from solid to liquid.
  • Electrical Conductivity: High, facilitating efficient welding processes.
  • Thermal Conductivity: Moderate, ensuring effective heat transfer during welding.
  • Ductility: Exhibits good ductility, allowing for flexibility in welding applications.
  • Magnetic Properties: Typically non-magnetic in annealed condition, minimizing interference.
  • Corrosion Resistance: Offers excellent resistance to corrosion, maintaining weld integrity in various environments.

ER 308L Mig Wire Mechanical Properties:

  • Tensile Strength: Typically ranging from 570 to 730 MPa, indicating maximum load capacity before breaking.
  • Yield Strength: Typically around 350 to 420 MPa, representing the stress level for permanent deformation onset.
  • Elongation: Typically 35% to 45%, demonstrating the ability to stretch without breaking.
  • Hardness: Varies depending on welding conditions and heat treatment.
  • Impact Toughness: Reflects the ability to absorb energy during impact without fracturing.
  • Fatigue Strength: Indicates resistance to failure under repeated loading.
  • Microstructure: Typically austenitic, contributing to corrosion resistance and mechanical properties.

ER 308L Mig Wire Applications:

  1. Food and Beverage Industry:
    • Used for welding equipment and machinery due to its low carbon content and corrosion resistance.
  2. Chemical Processing Plants:
    • Ideal for fabricating equipment and piping systems requiring corrosion resistance.
  3. Pharmaceutical Industry:
    • Utilized for welding components in pharmaceutical manufacturing equipment due to cleanliness requirements.
  4. Aerospace Industry:
    • Applied in the fabrication of aircraft components due to its high strength and corrosion resistance.
  5. Automotive Industry:
    • Used for welding stainless steel parts in automotive manufacturing, including exhaust systems and body panels.
  6. Power Generation:
    • Suitable for welding components in power plants where corrosion resistance is essential.
  7. General Fabrication:
    • Widely used in various industries for welding stainless steel components requiring strong and durable welds.

ER 308L Mig wire finds application in industries requiring robust welds with excellent corrosion resistance and low carbon content.