Oerlikon Inertrod 318Si description: INERTROD 318Si is a W 19 12 3 Nb Si type solid TIG welding rod depositing a C-19Cr 12Ni 2.5Mo niobium stabilised weld metal. Suitable for use mainly with Ar shielding gas. INERTROD 318Si is used for the welding of 316Ti and 316Nb stainless steels in a wide range of applications including the fabrication of pipe, plate and vessel. The weld metal has good resistance to crevice corrosion by oxidising acids. The increased silicon content promotes weld pool fluidity resulting a smoother weld deposit. TIG rod for welding type AISI 318 stabilized austenitic steels. The presence of stabilizers improves resistance to
oxidation by the deposit.