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Ferro Frit CC-250

Alternate Names: Frit CC250, Frit CC250-2

Description: High calcium boron source for partially fritted glazes

Oxide Analysis Formula Tolerance
CaO 13.51% 0.69
K2O 0.51% 0.02
Na2O 6.22% 0.29
B2O3 15.95% 0.66
Al2O3 10.50% 0.30
SiO2 53.30% 2.56
Oxide Weight 288.52
Formula Weight 288.52

Notes

This is a USA pottery frit, Ferro now calls it Frit CC250-2. It is available in small quantities at lagunaclay.com.

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.

Related Information

Links

Materials Fusion Frit F-280
Materials Frit
Frits are made by melting mixes of raw materials, quenching the melt in water, grinding the pebbles into a powder. Frits have chemistries raw materials cannot.
Materials Hommel Frit 1020
Materials Ferro Frit CC-250-2
Materials Potclays Frit 2263
Typecodes Frit
A frit is the powdered form a man-made glass. Frits are premelted, then ground to a glass. They have tightly controlled chemistries, they are available for glazes of all types.
Typecodes Available from Laguna Clays
URLs https://digitalfire.com/4sight/datasheets/ferropotteryfrits2008.pdf
Ferro Pottery Frits 2008

Data

Co-efficient of Linear Expansion 7.73
Frit Softening Point 1500-1700F

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