Frit 3134 50
EPK 13
Kaolin (Calc.) 11
Custer feldspar 11
Whiting 15
Total 1000
Na2O 0.20 Al2O3 0.25 SiO2 1.61
K2O 0.03 B2O3 0.38 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.76 Fe2O3 0.00
Alumina:Silica ratio is 1.00:6.49
Neutral:Acid ratio is 1.00:2.56
Alk:Neut:Acid ratio is 1.00:0.63:1.62
Expansion: 87.1 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3
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