16 440 A$16.00 - A$440.00
Ferro Frit 4064
Lead alumina bilsilicate frit with small amount of sodium
Alternate Names: Frit 4364, Frit 3531, Frit DA4064
A frit is a type of ceramic glass. It is a combination of materials which are melted together to render them insoluble and resistant to acid attack. They are therefore a means of introducing certain materials into a glaze which would otherwise be toxic. Frits can be used alone as low temperature glazes e.g. Raku and Majolica, but generally they form the basis of a glaze recipe.
LEAD FRITS Glazes based on lead frits produce a shiny, durable finish and give brightness and clarity of colour when used in conjunction with oxides, stains, slips etc. While they can be used on all earthenware clays, they are particularly suited for red clay.
BORAX FRITS Borax frits are often used in the production of earthenware glazes when a lead free frit is required. Slight milkiness, especially at low temps, may be evident over red clays and the colour response with oxides etc. is not usually as vivid as with lead frits.
ALKALINE FRITS Similar to borax frits, alkaline frits are noted for their high soda and potash content. The colour response from copper and manganese is turquoise and purple/brown respectively - typical of this type of frit. Alkaline frits have a high expansion rate which makes them a suitable base for crackle glazes.
Oxide Analysis Formula
Na2O 0.97% 0.051
PbO 64.92% 0.949
Al2O3 2.02% 0.065
SiO2 32.10% 1.743
Oxide Weight 326.29
Formula Weight 326.29
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DENS - Density (Specific Gravity) 4.50
GSPT - Frit Softening Point 510C
MLRG - Frit Melting Range (C) 950-1080C
GTTM - Glass Transition Temperature 465C
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