About ER 310 Core Wire

ER 310 core wire is a heat-resistant stainless steel welding wire primarily used for high-temperature applications. It offers excellent oxidation and corrosion resistance, making it suitable for furnace components, heat exchangers, and other elevated temperature environments.

ER 310 Core Wire Chemical Compositions:

The chemical composition of ER 310 core wire typically includes:

  • Chromium (Cr):0 – 28.0%
  • Nickel (Ni):0 – 22.0%
  • Carbon (C): ≤ 0.08%
  • Manganese (Mn): ≤ 2.00%
  • Silicon (Si): ≤ 1.50%
  • Phosphorus (P): ≤ 0.045%
  • Sulfur (S): ≤ 0.030%
  • Molybdenum (Mo): ≤ 0.75%
  • Iron (Fe): Balance

This composition provides ER 310 core wire with high-temperature strength and corrosion resistance suitable for various applications in heat-resistant environments.

ER 310 Core Wire Physical Properties:

ER 310 core wire possesses specific physical properties essential for welding applications:

  1. Density: Typically around 7.9 g/cm³, determining its mass per unit volume.
  2. Melting Point: Approximately 1400-1450°C (2552-2642°F), indicating its transition to liquid form under heat.
  3. Tensile Strength: Generally 550-750 MPa, its resistance to breaking under tension.
  4. Yield Strength: Typically 250-350 MPa, indicating the stress at which it deforms plastically.
  5. Elongation: Usually 30-40%, indicating its ability to stretch without fracturing.
  6. Hardness: Typically 150-200 HV, determining its resistance to indentation.
  7. Thermal Conductivity: Approximately 15-20 W/m·K, indicating its ability to conduct heat.
  8. Electrical Resistivity: Around 70-80 µΩ·cm, its resistance to electric current flow.

These properties ensure ER 310 core wire’s suitability for various welding applications, offering clean, strong welds with minimal defects.

ER 310 Core Wire Mechanical Properties:

ER 310 core wire typically demonstrates the following mechanical properties:

  1. Tensile Strength: Generally between 550-750 MPa, indicating its capacity to withstand pulling forces without breaking.
  2. Yield Strength: Typically around 250-350 MPa, indicating the stress at which it begins to deform plastically.
  3. Elongation: Typically 30-40%, indicating its ability to stretch without fracturing.
  4. Hardness: Typically in the range of 150-200 HV, determining its resistance to indentation or scratching.
  5. Impact Strength: Exhibits good toughness, able to withstand sudden loads without fracturing.
  6. Fatigue Resistance: Shows resistance to failure under cyclic loading conditions.
  7. Ductility: Demonstrates sufficient ductility to undergo deformation without fracture under tensile stress.
  8. Weldability: Offers excellent weldability with minimal risk of cracking or defects.
  9. Corrosion Resistance: Resistant to corrosion, especially in high-temperature environments.

These properties ensure ER 310 core wire’s reliability and effectiveness in welding operations, particularly in high-temperature applications.

ER 310 Core Wire Applications:

ER 310 core wire finds applications in various industries, particularly those requiring high-temperature resistance, including:

  1. Furnace Construction: Used for welding furnace components such as heating elements, radiant tubes, and combustion chambers.
  2. Heat Exchangers: Employed in the fabrication of heat exchanger tubes and plates for high-temperature environments.
  3. Power Generation: Used in welding components for boilers, turbines, and exhaust systems in power plants.
  4. Petrochemical Industry: Applied in the construction of reactors, piping systems, and process equipment exposed to high temperatures.
  5. Aerospace: Utilized for welding components in aircraft engines and propulsion systems where heat resistance is crucial.
  6. Metal Processing: Used for welding equipment in steel mills, foundries, and metal processing facilities.
  7. Chemical Processing: Employed in the fabrication of equipment for chemical reactors, distillation columns, and heat exchangers.
  8. Oil and Gas Industry: Used for welding components in refinery units, such as cracking units and reformers.
  9. Automotive: Applied in welding exhaust systems and components exposed to high-temperature exhaust gases.
  10. General Fabrication: Utilized in various fabrication projects requiring high-temperature strength and corrosion resistance.