NOVELTY - Forming glass involves heating ingredients together above melting temperature to form molten glass; and cooling, where the ingredients are as follows: group A including silicon oxides, boron oxides, zinc oxides and/or phosphorus oxides; group B including aluminum oxides, titanium oxides, zirconium oxide and/or yttrium oxide; group C including magnesium oxides, calcium oxides, strontium oxides and/or barium oxides; group D including titanium oxides, zirconium oxides, niobium oxides, platinum, manganese oxides and/or cerium oxides; and group E including lithium, sodium and/or potassium.    USE - For forming a glass which is used in bonded assembly (claimed); and also used I fuel cell.    ADVANTAGE - The crystallization step increases the viscosity of the glass at a given temperature, and increases other mechanical properties such as strength and fracture toughness. The bonding glass has a glass transition temperature of 550-800 degrees C, and a crystallization temperature of 50-200 degrees C greater than the transition temperature.    DETAILED DESCRIPTION - Forming a glass, involves providing ingredients; heating ingredients together above a melting temperature to form a molten glass; cooling the glass, where the ingredients combine to provide constituents containing 70-95 mol.% group A; 5-20 mol.% group B; 1-20 mol.% group C; 0-6 mol.% group D; and 0-10 mol.% group E, where the group A is selected from 15-65 mol.% silicon oxides, 0-20 mol.% boron oxides, 15-55 mol.% zinc oxides and/or 0-25 mol.% phosphorus oxides; the group B is selected from 3-20 mol.% aluminum oxides, 5-20 wt.% titanium oxides, 5-20 mol.% zirconium oxide, and/or 5-20 mol.% yttrium oxide; the group C is selected from 1-20 mol.% magnesium oxides, 1-20 mol.% calcium oxides, 1-20 mol.% strontium oxides, and/or 1-20 mol.% barium oxides; the group D is selected from the 0-6 mol.% titanium oxides, 0-6 mol.% zirconium oxides, 0-6 mol.% niobium oxides, 0-6 mol.% platinum, 0-6 mol.% manganese oxides, and/or 0-6 mol.% cerium oxides; and the group E is selected from 0-10 mol.% lithium, 0-10 mol.% sodium, and/or 0-10 mol.% potassium. An INDEPENDENT CLAIM is included for a bonded assembly that withstands high temperatures comprising a first substrate; a second substrate; a glass, disposed between the two substrates and establishing a bond between the substrates, where the glass comprises 70-95 mol.% group A; 5-20 mol.% group B; 1-20 mol.% group C; 0-6 mol.% group D; and 0-10 mol.% group E.