Ferro Frit CC-250

Alternate Names: Frit CC250, Frit CC250-2

Description: High calcium boron source for partially fritted glazes

Oxide	Analysis	Formula
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

By Tony Hansen
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