S522508-019 - Hobart ER308L Stainless MIG Wire .035 2lb Spool

High-Performance ER308L Stainless Steel Wire

The Hobart S522508-019 is a premium quality ER308L stainless steel MIG welding wire designed for joining types 304, 304L, 308, and 308L stainless steels. Manufactured to strict tolerances, this wire features a nominal diameter of .035 inches (0.9 mm) and is supplied on a 2 lb (0.9 kg) spool, typically measuring 4 inches in diameter. The 'L' designation indicates a low carbon content (maximum 0.03%), which is critical for preventing intergranular corrosion and carbide precipitation during the welding process. This makes it an excellent choice for applications where the weld zone must maintain corrosion resistance properties similar to the base metal.

Metallurgically, the wire composition includes Chromium (approx. 19.5-22.0%) and Nickel (approx. 9.0-11.0%), providing a stable austenitic structure. The inclusion of silicon enhances the fluidity of the weld puddle (wetting action), resulting in flatter bead profiles and smoother tie-ins at the toes of the weld. This wire is designed for use with Direct Current Electrode Positive (DCEP) polarity. Recommended shielding gases include mixtures of Argon and Oxygen (e.g., 98% Ar / 2% O2) for spray transfer, or Helium-based tri-mixes (He/Ar/CO2) for short-circuit transfer modes often used with this diameter.

This product is ideal for industrial fabrication, maintenance, and repair operations requiring high-integrity stainless steel joints. Its consistent cast and helix ensure reliable feeding through standard MIG gun liners, although the use of a Teflon or plastic liner is recommended to prevent ferrous contamination from the feeding system.