1. keevituse metallurgiaprotsesside tulemusena õmbluse pinnal moodustunud klaasjas kiht; 2. räbustist ja sulatuse käigus moodustunud lisanditest koosnev metallurgiline materjal, mis sulatuse käigus katab sulametalli
a nonmetallic product resulting from the mutual dissolution of flux and nonmetallic impurities in smelting, refining, and certain welding operations; in steelmaking operations, the slag serves to protect the molten metal from air and to extract certain impurities