Canadian owned and operated
When your project requires joining stainless steel to carbon steel, the Central Wire ER309LSi MIG Wire (.030", 10 lb Spool) is the industry-standard solution. Known as the "problem solver" of stainless alloys, the 309 grade is formulated with high chromium (approx. 24%) and nickel (approx. 13%) levels. This rich chemistry allows the wire to tolerate dilution from mild steel base metals without cracking or losing its stainless properties. This makes it indispensable for maintenance and repair operations where base metal composition might be mixed or unknown.
The "Si" designation indicates a high-silicon formulation. For the welder, this translates to a more fluid puddle and an exceptionally stable arc. The wire "wets out" smoothly against the sidewalls of the joint, minimizing the risk of cold lap and creating a visually appealing weld bead with fine ripple patterns. This is particularly advantageous when welding in the flat or horizontal positions, allowing for faster travel speeds and increased productivity. The 0.030-inch diameter is versatile enough for thin-gauge sheet metal applications while still capable of handling multi-pass welds on thicker sections.
Packaged in a convenient 10 lb spool, this product fits most standard portable and benchtop wire feeders. Central Wire's manufacturing process ensures a clean wire surface free of drawing lubricants, which promotes consistent electrical contact and reduces tip wear. Whether you are building custom automotive exhaust systems, repairing industrial machinery, or fabricating structural transitions, this ER309LSi wire delivers professional results with excellent crack resistance and ductility.
| Additional Information |
|---|
| Brand:Central Wire |
| AWS Spec:ER309LSi |
| Diameter:0.030 in |
| Grade:309 HiSil |
| Packaging:10 lb Spool |
| Weld Process:MIG (GMAW) |
| Polarity:DCEP |
| Material Composition:Stainless Steel |
| Wire Type:Solid |
| Shielding Gas Requirement:Argon/CO2 Mix, Argon/Oxygen Mix, Tri-Mix |
| Alloy:ER309LSi |
| Tensile Strength:85,000 PSI (Typical) |
| Applications:Dissimilar Metal Joining, Buffer Layers, Cladding |
| Packaging Description:1of1 |
