Pemco Frit P-238

M.P./°F 1450.0

Silica/Alumina ratio: 4.3:1

Equivalent Molecular Weight:  670.728



Molecular Formula of Pemco Frit P-238:

	K2O   0.221	Al2O3  1.086	SiO2  4.635
	Na2O  0.779	B2O3   3.062	


     Percentage Analysis

	 41.50 % 	SiO2 
	 16.50 % 	Al2O3
	  3.10 % 	K2O  
	  7.20 % 	Na2O 
	 31.70 % 	B2O3 
	_____________________
	100 % 		TOTAL

Comments: 7.6 x 10-6 coefficient of thermal expansion (50-450° C) I.F.P.  °C = 535 
Melting Range °F = 1450-1560