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Ferro Frit CC-250

High calcium boron source for partially fritted glazes

Alternate Names: Frit CC250, Frit CC250-2

OxideAnalysisFormula
CaO13.51%0.695
K2O0.51%0.016
Na2O6.22%0.289
Al2O310.50%0.297
B2O315.95%0.661
SiO253.30%2.559
Oxide Weight288.52
Formula Weight288.52
If this formula is not unified correctly please contact us.
COLE - Co-efficient of Linear Expansion 7.73
GSPT - Frit Softening Point 1500-1700F

This is a USA pottery frit, Ferro now calls it Frit CC250-2.

Ferro only gives approximate chemistry for this as of 2008.
We had a complete analysis (historical from previous sources), but it totaled more than 104.5 (so it is was not accurate). However, we noted that it specified 5.1% K2O whereas Ferro says <1%. That likely means we had a typo and it should have been 0.51. So this reflects that change.

Can also make clear fast fire glazes at cone 06 with 10% kaolin addition.


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By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Ferro Frit CC-250" descrip="High calcium boron source for partially fritted glazes" searchkey="Frit CC250, Frit CC250-2" loi="0.00" casnumber="65997-18-4"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="13.510" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="0.510" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="6.220" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="10.500" tolerance=""/> <oxide symbol="B2O3" name="Boric Oxide" status="" percent="15.950" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="53.300" tolerance=""/> </oxides> </material>


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