vendredi 14 octobre 2011

Cone 4 #2 Satiné/Brilliant

Custer feldspar 48
Gerstley borate 11
Frit 3134 12
Silica 12
Barium 9
EPK 5
Zinc oxide (calc.) 3
Total 100

Na2O 0.18 Al2O3 0.36 SiO2 3.16
K2O 0.19 B2O3 0.30 P2O5 0.00
MgO 0.03 TiO2 0.00
CaO 0.31 Fe2O3 0.00
ZnO 0.13
BaO 0.16

Alumina:Silica ratio is 1.00:8.89
Neutral:Acid ratio is 1.00:4.82
Alk:Neut:Acid ratio is 1.00:0.66:3.17

Expansion: 80.3 x 10e-7 per degree C
Oxides causing abnormal expansion: B2O3

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