C/04 Satin Textured Ash Glaze Base #18

Ash Berhens 20
Frit 3134 50
Kona F-4 feldspar 10
Ball clay 20

Na2O 0.21 Al2O3 0.20 SiO2 1.65
K2O 0.03 B2O3 0.35 P2O5 0.03
MgO 0.02 TiO2 0.01
CaO 0.74 Fe2O3 0.01

Alumina:Silica ratio is 1.00:8.06
Neutral:Acid ratio is 1.00:3.03
Alk:Neut:Acid ratio is 1.00:0.56:1.70

Expansion: 87.2 x 10e-7 per degree C
Oxides causing abnormal expansion: