 | ER308LSi Stainless Steel MIG Wire |
AWS: AWS A5.9 – ER308LSi
A high-silicon austenitic stainless steel solid welding wire offering excellent molten-metal fluidity, smooth wire feeding and stable arc performance. It produces smooth, clean and attractive welds with minimal spatter and is suitable for all-position welding of 304L and other 18Cr-8Ni austenitic stainless steels.
Applications
• Petrochemical Equipment
• Food Processing Equipment
• Pressure Vessels & Storage Tanks
• Stainless Steel Fabrication
• Welding of 304L / 18Cr-8Ni Stainless Steel
Features
• Good Corrosion Resistance
• Stable Arc
• Low Spatter
• Smooth Weld Appearance
• Good Mechanical Properties
• All-Position Welding
Typical Chemical Composition (%)
C | Mn | Si | Cr | Ni | Mo | P | S | Cu |
≤0.03 | 1.0-2.5 | 0.65-1.00 | 19.5-22.0 | 9.0-11.0 | ≤0.75 | ≤0.03 | ≤0.03 | ≤0.75 |
AWS standard limits; single values shown with ≤ are maximum values.
Typical Mechanical Properties
Tensile Strength | Elongation | Shielding Gas | Gas Flow | Polarity |
595 MPa | 43% | 98% Ar + 2% O₂ | 20–25 L/min | DC+ |
Recommended Welding Parameters (DC+)
Wire Size | Flat / Horizontal Current | Voltage | Vertical-Up Current | Voltage | Overhead Current | Voltage |
0.8 mm | 70–150 A | 20–25 V | 50–120 A | 19–23 V | 50–120 A | 19–23 V |
1.0 mm | 100–200 A | 22–28 V | 80–150 A | 20–25 V | 80–150 A | 20–25 V |
1.2 mm | 140–220 A | 23–33 V | 120–180 A | 24–28 V | 160–200 A | 26–30 V |
Welding Position
Flat · Horizontal · Vertical-Up · Overhead
Welding Notes
• Clean rust, moisture, oil, dust and other contaminants from the weld area before welding.
• Recommended shielding gas: 98% Ar + 2% O₂; maintain a gas flow of approximately 20–25 L/min.
• Maintain a wire stick-out of approximately 15–25 mm and use suitable welding parameters.
• For outdoor welding, provide adequate wind protection when wind speed exceeds 1.5 m/s.
• Use controlled heat input and proper welding technique to maintain corrosion resistance and weld appearance.
