About ER 308LSi Core Wire

ER 308LSi core wire is a stainless steel welding wire containing silicon, enhancing fluidity and arc stability. It’s designed for welding austenitic stainless steels like 304 and 308L, offering clean, strong welds with minimal spatter.

ER 308LSi Core Wire Chemical Compositions:

The chemical composition of ER 308LSi core wire typically includes:

• Chromium (Cr):0 – 20.0%
• Nickel (Ni):0 – 11.0%
• Carbon (C): ≤ 0.03%
• Manganese (Mn):0 – 2.5%
• Silicon (Si):65 – 1.00%
• Phosphorus (P): ≤ 0.045%
• Sulfur (S): ≤ 0.03%
• Iron (Fe): Balance

Additionally, it may contain trace amounts of elements like titanium, niobium, or molybdenum for specific applications.

ER 308LSi Core Wire Physical Properties:

ER 308LSi core wire possesses unique physical properties essential for welding:

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 308LSi core wire’s suitability for welding, providing clean, strong welds with minimal defects.

ER 308LSi Core Wire Mechanical Properties:

ER 308LSi core wire typically exhibits 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 environments containing chlorides or sulfides.

These properties ensure ER 308LSi core wire’s reliability and effectiveness in welding operations.

ER 308LSi Core Wire Applications:

ER 308LSi core wire finds applications in various industries, including:

1. Food and Beverage Industry: Used for welding equipment and structures due to its corrosion resistance and cleanliness.
2. Chemical Processing: Employed for welding components in chemical plants due to its resistance to corrosive environments.
3. Pharmaceutical Industry: Utilized for welding sanitary equipment and piping systems.
4. Automotive Industry: Used in the fabrication of exhaust systems and other components requiring corrosion resistance.
5. Construction: Applied in architectural features and structural components where corrosion resistance is essential.
6. Oil and Gas: Utilized for welding pipelines, tanks, and other equipment subjected to corrosive environments.
7. Aerospace: Employed for welding components in aircraft structures due to its strength and corrosion resistance.
8. Marine: Used for welding marine equipment and structures due to its resistance to saltwater corrosion.
9. Power Generation: Applied in welding components in power plants due to its resistance to high-temperature environments and corrosion.
10. General Fabrication: Utilized in various fabrication projects requiring clean, strong welds with minimal spatter.