
Tackle your stainless steel projects with confidence using the Bonarc ER308L .030" MIG welding wire. This 1kg spool is the perfect companion for welders using spool guns or compact portable MIG machines. Whether you are repairing a commercial kitchen exhaust, fabricating a custom car exhaust, or working on marine hardware, this wire delivers the professional results you expect. The ER308L classification means you are getting a wire designed specifically for the most common stainless grades, including 304 and 304L.
Stainless steel is chosen for its rust resistance, but welding can sometimes compromise that property if the wrong filler metal is used. The Bonarc ER308L has extra-low carbon content. This chemistry prevents the formation of carbides at the grain boundaries of the weld, ensuring your weld won't rust from the inside out over time. It provides superior corrosion resistance compared to standard 308 wire, making it the smart choice for any project that will be exposed to moisture or mild chemicals.
One of the biggest challenges with MIG welding stainless steel is wire feeding. Bonarc's precision layer winding helps the wire feed smoothly through your gun liner or spool gun, minimizing friction and preventing tangles. The .030" (0.8mm) diameter is a sweet spot for many welders—it is thin enough to handle sheet metal without blowing through, yet substantial enough to lay down a solid bead on 1/8" or 3/16" plate. You will appreciate the stable arc and the fluid weld puddle that wets out nicely at the toes of the weld.
The 1kg (2.2 lb) spool size is designed to fit standard 4-inch spool hubs. This makes it incredibly convenient for mobile welders who don't want to lug around heavy 33lb spools, or for shop users who only weld stainless occasionally and don't want a large spool oxidizing on the shelf. Pair this wire with a Tri-mix gas or an Argon/CO2 blend (like 98/2) and DCEP polarity for a clean, bright weld with minimal spatter to clean up afterward.
| Additional Information |
|---|
| Brand:Bonarc |
| Diameter:0.030 in |
| Aws Spec:ER308L |
| Grade:308 |
| Packaging:1 kg Spool |
| Packaging Description:1kg-spool |
| Weld Process:MIG (GMAW) |
| Polarity:DC, DCEP |
| Material Composition:Stainless Steel |
| Wire Diameter:0.030" |
| Wire Type:Solid |
| Shielding Gas Requirement:Argon/CO2 Mix, Tri-Mix (He/Ar/CO2) |
| Spool Size:1 kg, 4 in |
| AWS Classification:ER308L |
| Applications:Food Processing, Chemical Tanks, General Fabrication |