... ,oxidation and corrossion resistance. high-strength SIC crucibles:Material: Sic, graphiteApplication Range: For melting gold, silver, copper and brass, ... alumina, Pb. Zn, etc,and medium-C steel, and varieus rave metals.Applicable ... furnaces, electric furnaces. Indultionfurnaces.Lifetime: For A1 and various A1 alloys, the lifetime can achieve 3 months ...