Oerlikon Supranox 316L description: SUPRANOX 316L is a semi-basic MMA electrode suitable for the welding of austenitic steels Cr-Ni steels or cast steels containing 16-20%Cr, 10-14%Ni and 2-3%Mo, i.e. AISI 316 and 316L, having an extra low carbon content. This electrode can also be used for welding of stainless steels of the same type whether stabilised or not for services temperatures up to +400C.