6.Ferro Frit 3193 Silica/Alumina ratio: 11.7:1 Equivalent Molecular Weight: 271.500 Molecular Formula of Ferro Frit 3193: K2O 0.074 Al2O3 0.208 SiO2 2.440 Na2O 0.407 B2O3 0.610 CaO 0.519 Percentage Analysis 53.99 % SiO2 7.81 % Al2O3 2.57 % K2O 9.29 % Na2O 10.72 % CaO 15.61 % B2O3 _____________________ 100 % TOTAL Formule en Pourcentage Molaire : K2O 1,74 % Na2O 9,56 % CaO 12,19 % Al2O3 4,88 % B2O3 14,33 % SiO2 57,3 % Comments: ? x10 x10-6 Coefficient of expansion