Pemco Frit P-283

Cost/lb: $1.62

M.P./°F 1420

Silica/Alumina ratio: 22.0:1

Equivalent Molecular Weight:  344.200



Molecular Formula of Pemco Frit P-283:

	Na2O  0.922	Al2O3  0.199	SiO2  4.385
	CaO   0.018		
	MgO   0.060		



     Percentage Analysis

	 76.50 % 	SiO2 
	  5.90 % 	Al2O3
	 16.60 % 	Na2O 
	  0.70 % 	MgO  
	  0.30 % 	CaO  
	_____________________
	100 % 		TOTAL

Comments: 9.2 x 10-6 coefficient of thermal expansion (50-450° C)  melting range of 1420-1670° F