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Ferro Frit 3270

Description: Borosilicate cone 06-04 frit for cobalt colors

Oxide Analysis Formula
CaO 8.50% 0.46
K2O 5.40% 0.17
Na2O 7.40% 0.36
B2O3 22.61% 0.99
Al2O3 8.30% 0.25
SiO2 47.79% 2.42
Oxide Weight 304.70
Formula Weight 304.70

Notes

This is a USA pottery frit, Ferro now calls it Frit 3270-2.
It has higher boron, lower alkali and much higher CaO than Frit 3269. The alkali is still significant enough to drive the thermal expansion fairly high.

Related Information

Links

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 Pemco Frit P-802
Materials Hommel Frit 378A
Materials Frit V-3
Materials Hommel Frit 378
Materials Ferro Frit 3278
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.
URLs https://digitalfire.com/4sight/datasheets/ferropotteryfrits2008.pdf
Ferro Pottery Frits 2008

Data

Co-efficient of Linear Expansion 8.79
Frit Melting Range (C) 1500-1600F
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