Welding wire Lincoln Electric TIG LNT 316LSi 3.2 mm 5 kg for stainless steel

Lincoln Electric TIG LNT 316LSi solid welding wire, 3.2 mm diameter on a 5 kg spool, is a filler metal formulated for welding austenitic stainless steels where 316L chemistry with silicon addition is required. This TIG wire is intended for TIG processes that accept solid 3.2 mm wire and produces welds with corrosion resistance and mechanical properties appropriate for fabrication, maintenance and light industrial applications. The product is suitable for joining base materials with comparable composition and for applications requiring reduced carbon content to minimize sensitization.

Advantages

The Lincoln Electric LNT 316LSi wire offers consistent wire feed and stable arc characteristics for TIG welding, enabling controlled deposition and good wetting. Its low-carbon 316L composition combined with silicon improves resistance to intergranular corrosion and enhances fluidity of the weld pool, which helps achieve smooth bead appearance and reduced risk of crack formation. Supplied on a compact 5 kg spool, the solid wire is easy to handle and store for workshop and repair use.

Suitable for

• Welding 316L and similar austenitic stainless steels
• Fabrication of chemical, food and process equipment where corrosion resistance is needed
• Repair and maintenance of stainless steel components and assemblies
• Welds exposed to mildly corrosive environments and atmospheric conditions

Key specifications

• Wire type: solid TIG filler metal for stainless steel
• Alloy chemistry: 316L with silicon addition for improved fluidity
• Diameter: 3.2 mm
• Packaging: 5 kg spool
• Welding process compatibility: TIG (GTAW) applications accepting solid wire
• Primary properties: corrosion resistance, low carbon to reduce sensitization

How to use

Use the wire in TIG (GTAW) equipment set up for manual or automated feeding of 3.2 mm solid filler. Prepare joint surfaces by removing scale, oil and contaminants to ensure sound fusion and corrosion resistance. Select welding parameters (current, gas flow and travel speed) appropriate for material thickness and joint configuration; shielding with pure argon or argon-based mixtures is recommended for optimal arc stability and weld cleanliness. Maintain proper torch angle and arc length to achieve desired bead profile and penetration.

Usage recommendations

Store the spool in a dry, clean environment to prevent contamination. For critical applications, perform weld procedure qualification and post-weld cleaning or passivation as required by project specifications. When joining dissimilar metals or thicker sections, consult welding procedure guidelines to adjust preheat, interpass temperature and filler selection accordingly.