About ER 316 Sub Arc Wire

ER 316 Sub Arc Wire is a stainless steel welding wire with molybdenum addition for enhanced corrosion resistance, particularly in chloride environments. It’s commonly used for welding 316 stainless steel and similar alloys in applications such as chemical processing, food processing, and marine equipment.

ER 316 Sub Arc Wire Chemical Compositions:

ER 316 Sub Arc Wire typically contains the following chemical compositions:

  • Carbon (C): 0.08% max
  • Manganese (Mn): 2.0% max
  • Silicon (Si): 0.75% max
  • Phosphorus (P): 0.045% max
  • Sulphur (S): 0.03% max
  • Chromium (Cr): 16.0-18.0%
  • Nickel (Ni): 10.0-14.0%
  • Molybdenum (Mo): 2.0-3.0%

These elements contribute to its corrosion resistance and weldability properties.

ER 316 Sub Arc Wire Physical Properties:

ER 316 Sub Arc Wire possesses the following physical properties:

  1. Density: Typically around 7.98 g/cm³, similar to other stainless steel alloys.
  2. Melting Point: Approximately 1370-1400°C (2498-2552°F), ensuring stability during welding.
  3. Electrical Resistivity: About 0.74 µΩ·m, facilitating efficient electrical conductivity during welding.
  4. Thermal Conductivity: Around 14.6 W/m·K, aiding in heat dissipation and maintaining uniform weld temperatures.
  5. Coefficient of Thermal Expansion: Moderate, ensuring minimal distortion and stress in welded components subjected to temperature variations.
  6. Magnetic Properties: Typically non-magnetic in the annealed condition, suitable for applications requiring non-magnetic properties.
  7. Corrosion Resistance: Excellent resistance to corrosion, particularly in chloride environments, making it suitable for marine and chemical processing applications.

These properties collectively make ER 316 Sub Arc Wire well-suited for various welding applications requiring corrosion resistance and strength.

ER 316 Sub Arc Wire Mechanical Properties:

ER 316 Sub Arc Wire exhibits the following mechanical properties:

  1. Tensile Strength: Typically between 485-620 MPa, providing adequate strength for welded joints.
  2. Yield Strength: Generally ranging from 205-275 MPa, indicating the stress level at which the material begins to deform plastically.
  3. Elongation: Typically around 35-45%, indicating the extent to which the material can stretch before failure.
  4. Hardness: Often in the range of 85-95 HRB (Rockwell hardness), reflecting its resistance to indentation or penetration.
  5. Impact Toughness: Good impact resistance, enabling it to withstand sudden loading or shock without fracturing.
  6. Fatigue Strength: Exhibits a moderate resistance to fatigue failure, suitable for cyclically loaded applications.
  7. Ductility: Demonstrates good ductility, enabling it to deform without fracturing under tensile stress, crucial for forming and shaping processes.

These mechanical properties ensure ER 316 Sub Arc Wire delivers reliable performance in various welding applications.

ER 316 Sub Arc Wire Applications:

ER 316 Sub Arc Wire finds applications in various industries, including:

  1. Chemical Processing: Welding of equipment and piping in corrosive environments.
  2. Marine: Fabrication of marine equipment and structures due to its excellent corrosion resistance.
  3. Food Processing: Welding of food-grade equipment where corrosion resistance is essential.
  4. Pharmaceutical: Welding of sanitary equipment for pharmaceutical manufacturing.
  5. Oil and Gas: Welding of components in offshore platforms and pipelines.
  6. Power Generation: Fabrication of components for nuclear and conventional power plants.
  7. Automotive: Welding of exhaust systems and components requiring corrosion resistance.

These applications benefit from ER 316 Sub Arc Wire’s corrosion resistance, making it suitable for demanding environments.