Silica 20
Frit 3134 21
EPK 3
Nepheline syenite 38
Whiting 18
Total 100
Bentonite 3
Na2O 0.27 Al2O3 0.27 SiO2 2.43
K2O 0.05 B2O3 0.18 P2O5 0.00
MgO 0.01 TiO2 0.00
CaO 0.68 Fe2O3 0.00
Alumina:Silica ratio is 1.00:8.92
Neutral:Acid ratio is 1.00:5.36
Alk:Neut:Acid ratio is 1.00:0.45:2.44
Expansion: 85.0 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3
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