Oerlikon Inertfil 309LSi description: INERTFIL 309LSi is used for the welding of stainless steels to mild and medium tensile steels. It is used for depositing intermediate layers on steel prior to depositing 308 grade stainless steel. Also used for the welding of clad steels where service temperatures are below 300C. The weld metal has a delta-ferrite content of 12% resulting in a high resistance to hot cracking. The increased silicon content results in increased weld pool fluidity to give a smooth deposit appearance. Solid wire for welding 25% CR and 12% Ni steels with low carbon content. The silicon content makes for excellent
weldability.