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Alternate Names: Frit FA233-2
Description: Zircon opacified zinc borate frit for opaque glazes
| Oxide | Analysis | Formula | Tolerance | 
|---|---|---|---|
| SiO2 | 47.50% | 2.64 | 2.5 | 
| B2O3 | 17.50% | 0.84 | 2.5 | 
| Na2O | 2.50% | 0.13 | 2.5 | 
| K2O | 0.50% | 0.02 | .5 | 
| CaO | 12.50% | 0.74 | 2.5 | 
| Al2O3 | 7.50% | 0.25 | 2.5 | 
| ZnO | 2.50% | 0.10 | 2.5 | 
| ZrO2 | 12.50% | 0.34 | 2.5 | 
| Oxide Weight | 344.30 | ||
| Formula Weight | 344.30 | ||
This is a USA pottery frit.
As of 2008 Ferro only published an approximate analysis, that is shown here.
| 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.  | 
| 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  | 
| Co-efficient of Linear Expansion | 7.04 | 
|---|---|
| Frit Softening Point | 1650F | 
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