ED033101 - Lincoln Excalibur 309/309L-17 Stainless Stick Electrode 1/8" 10lb Can

Technical Overview of Lincoln Excalibur 309/309L-17

The Lincoln Electric Excalibur® 309/309L-17 is a premium Stick (SMAW) electrode designed for the rigorous demands of industrial fabrication and maintenance. This electrode meets AWS A5.4 classifications for both E309-17 and E309L-17, offering a versatile solution for welding professionals. The '17' suffix indicates a titania-silica (rutile) based coating, which is formulated to provide a smooth, stable arc and produce a finely rippled bead appearance. This coating type also facilitates operation on both Alternating Current (AC) and Direct Current Electrode Positive (DC+), providing flexibility across various power sources.

Metallurgically, the Excalibur 309/309L-17 is engineered with a high alloy content of chromium and nickel, specifically balanced to weld Type 309 stainless steel. However, its primary technical advantage lies in its ability to join dissimilar metals. It is the industry standard for welding austenitic stainless steels (such as 304 or 316) to carbon or low-alloy steels. The high alloy content compensates for dilution from the mild steel base metal, ensuring the resulting weld deposit remains austenitic and ductile, thereby preventing cracking. Furthermore, the 'L' designation signifies a low carbon content (typically 0.04% max), which is critical for minimizing carbide precipitation at the grain boundaries during the thermal cycle. This feature significantly enhances the weld's resistance to intergranular corrosion, making it suitable for service environments where corrosion resistance is a priority.

Quality assurance is a hallmark of the Excalibur line. This product is part of Lincoln Electric's Q2 Lot® program. Each lot is manufactured under controlled conditions, and a certificate showing the actual deposit chemistry and Ferrite Number (FN) is available online. This level of traceability is essential for code-compliant work in sectors such as petrochemical processing, power generation, and pressure vessel fabrication. The electrode is supplied in a 10 lb Easy Open Can, ensuring the flux coating remains protected from moisture absorption until the moment of use.