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Fusion Frit F-12

Alternate Names: F12 Fusion,Frit F12

Oxide Analysis Formula
CaO 20.00% 0.68
Na2O 10.40% 0.32
B2O3 23.80% 0.65
Al2O3 0.80% 0.01
SiO2 45.00% 1.43
Oxide Weight 190.75
Formula Weight 190.75

Related Information

Ravenscrag GR6-A glaze with Frit 3134 and Fusion F-12

As this cone 6 melt flow test demonstrates, the Fusion F-12 is giving very similar performance to the Ferro. The GR6-A recipe is just 80% Ravenscrag Slip and 20% frit (10% zircopax has also been added to opacify). The degree-of-melt on the glazed tiles in also very similar, however notice that some of the whiteness has been lost on the second F-12 tile (the first is frit 3134). We are attributing this to the better melting of F-12, that is amplifying the color of iron present in the Ravenscrag Slip. For the third tile we reduced the frit to 15%, that has whitened it somewhat. Likely an increase in the zircon and would whiten it more.

Fusion F-12 vs Ferro Frit 3134 at cone 04

Melt flow test of Frit 3134 vs F-12

On paper, Fusion F-12 has a very similar chemistry to 3134. And in practice it also appears very similar, although a little more melt-fluid than the 3134.

G2926B using Fusion Frit F-12 instead of Ferro 3134

Melt fluidity tester comparing two versions of G2926B

G2926B is a popular recipe and there has been alarm recently because of the difficulty in getting the Ferro frit. This motivated us to get a supply of the Fusion equivalent, F-12. We have done much testing in glazes and with melt fluidity tests like this and so far it is looking good.

Links

Materials Ferro Frit 3134
Materials Solargil Frit FR8
Materials Hommel Frit 14
Materials Frit
Materials General Frit GF-111
Materials Pemco Frit P-54
Typecodes Frit

Data

Co-efficient of Linear Expansion8.18
Frit Softening Point1450F

By Tony Hansen


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