25.Ferro Frit 3291

Silica/Alumina ratio:
Equivalent Molecular Weight: 332.184

Molecular Formula of Ferro Frit 3291:

	CaO 	0.123 	Al2O3 	0.430 	SiO2 	2.510
	MgO 	0.877 	B2O3 	1.373

Percentage Analysis

	45.38 % 	SiO2
	13.20 % 	Al2O3
	10.64 % 	MgO
	2.08 % 		CaO
	28.70 % 	B2O3
	_____________________
	100 % 		TOTAL

Comments: 

	3.9 x 10-6 coefficient of expansion (50-450° C)