Oerlikon Inertrod 316LSi description: INERTROD 316LSi is a W 19 12 3 LSi/ER 316LSi type solid TIG welding rod depositing a low C-19Cr12Ni2.5Mo weld metal. Suitable for use with Ar shielding gas. INERTROD 316LSi is used for the welding of 316 and 316L grade stainless steels, in a wide range of applications including the fabrication of pipe and plate. The higher Si level promotes a smooth weld bead shape of even appearance with excellent toe blending, particularly in fillet welds. The weld metal provides good resistance to pitting and crevice corrosion by non-oxidising acids. Used for applications where service temperatures <400C.