Potterycrafts Low Expansion Frit

This low thermal expansion Borax frit is used to modify and reduce the thermal expansion of glazes when craze resistance is a problem. Additions to a glaze above 5%, can affect the glaze surface by reducing the gloss or shine.

Technical Information:

• Linear Thermal Expansion: 3.8x10-6/°C
• Firing Range: 1020 - 1150°C
• SiO2: 63.4%
• B2O3: 17.6%
• MgO: 2.2%
• Al2O3: 8.5%
• K2O: 0.2%
• CaO: 3.7%
• Li2O: 1.1%
• ZnO: 3.2%