33B.Ferro Frit 3467 Wt: 343.5 Fusion temp: 1700 °F Molecular Analysis: K2O 0.06 Al2O3 0.31 SiO2 3.23 Na2O 0.13 B2O3 0.22 CaO 0.49 MgO 0.05 PbO 0.26 Percentage Analysis: 56.5 % SiO2 9.1 % Al2O3 1.7 % K2O 2.4 % Na2O 0.6 % MgO 17.2 % PbO 4.5 % B2O3 Comments: Lead borosilicate frit. 6.9 x 10-6 coefficient of expansion; similar frits - Pemco Pb2F-35, and Fusion FL-17