62060801V - Bonarc ER308L Stainless MIG Wire .030 1kg Spool

Premium Bonarc ER308L Stainless Steel MIG Wire

The Bonarc ER308L .030" (0.8mm) MIG welding wire is a high-quality consumable designed for the rigorous demands of industrial stainless steel fabrication. Packaged in a convenient 1kg (2.2 lb) spool, this wire is engineered to meet AWS A5.9 specifications, ensuring consistent chemical composition and mechanical properties. It is primarily intended for welding austenitic stainless steels of the 18% Chromium - 8% Nickel variety, specifically AISI grades 301, 302, 304, and 304L.

Metallurgical Superiority

The "L" in ER308L stands for "Low Carbon." This wire features a maximum carbon content of 0.03%, which is critical for preventing carbide precipitation during the welding process. Carbide precipitation can lead to intergranular corrosion, a common failure mode in stainless steel welds exposed to harsh environments. By utilizing Bonarc ER308L, fabricators ensure that the weld metal maintains high corrosion resistance, matching or exceeding that of the base material. This makes it an excellent choice for applications in the chemical, food processing, and pharmaceutical industries where sanitary and corrosion-resistant finishes are mandatory.

Operational Performance

Bonarc has manufactured this wire with precision winding to ensure smooth feedability, reducing the risk of bird-nesting or liner clogging, which is particularly important when feeding softer stainless wires. The .030" diameter offers versatility, allowing for control on thinner gauge materials while still providing enough deposition for medium-thickness joints. The wire produces a stable arc with excellent wetting characteristics, resulting in a flat, smooth bead profile that requires minimal post-weld grinding or cleaning.

Applications and Compatibility

This product is suitable for joining common austenitic stainless steels and is often used for overlaying carbon steels. It is compatible with standard MIG welding setups using Direct Current Electrode Positive (DCEP) polarity. For optimal results, a shielding gas mixture of Argon/CO2 (98/2) or a Helium-based Tri-mix is recommended to maintain arc stability and weld cleanliness. The 1kg spool size fits standard 4-inch hubs found on spool guns and compact portable welding machines.