Pemco Frit P-311

M.P./°C 1500

Silica/Alumina ratio: 9.2:1

Equivalent Molecular Weight:  275.056



Molecular Formula of Pemco Frit P-311:

	K2O   0.020	Al2O3  0.270	SiO2  2.486
	Na2O  0.288	B2O3   0.570	
	CaO   0.691		

     Percentage Analysis

	 54.30 % 	SiO2 
	 10.00 % 	Al2O3
	  0.70 % 	K2O  
	  6.50 % 	Na2O 
	 14.10 % 	CaO  
	 14.40 % 	B2O3 
	_____________________
	100 % 		TOTAL

Comments: 7.0 x 10-6 coefficient of thermal expansion (50-450° C) 
IFP 669 °C melting range 1500-1630°F