Potterycrafts Low Borate Ferro Silicate Frit

This is a soft Sodium Borate frit with a high thermal expansion ideal for use in crystalline glazes.

Technical Information:

• Linear Thermal Expansion: 10.1x10-6/°C
• Firing Range: 920 - 950°C
• SiO2: 69.8%
• B2O3: 2.6%
• Al2O3: 3.7%
• Na2O: 15.2%
• K2O: 2.3%
• CaO: 6.3%