Silica 19
Frit 3134 25
EPK 5
Custer feldspar 41
Zinc oxide 10
Total 100
Bentonite 2
Na2O 0.19 Al2O3 0.28 SiO2 3.21
K2O 0.14 B2O3 0.26 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.29 Fe2O3 0.00
ZnO 0.38
Alumina:Silica ratio is 1.00:11.32
Neutral:Acid ratio is 1.00:5.96
Alk:Neut:Acid ratio is 1.00:0.54:3.21
Expansion: 75.1 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3
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