308LSi is primarily intended for welding the low carbon 18% Cr 110% Ni type 304 L austenitic stainless steels. Suitable also for welding normal carbon grade 304 and Nb or Ti stabilised steels (347, 321) provided service temperatures are below 400°C. The higher silicon content gives better arc stability and weld metal flow which improves bead appearance, particularly when dip transfer welding.