Five common frits fired at cone 03 (1950F)

Thursday 16th October 2014

Five common North American Ferro Frits fired at 1850F on alumina tiles (each started as a 10 gram GBMF test ball and flattened during the firing). At this temperature, the differences in the degree of melting are more evident that at 1950F. The degree of melting corresponds mainly to the percentage of B2O3 present. However Frit 3134 is the runaway leader because it contains no Al2O3 to stabilize the melt. Frit 3110 is an exception, it has low boron but very high sodium.

Pages that reference this post in the Digitalfire Reference Database:

Ferro Frit 3249, Ferro Frit 3110, Ferro Frit 3195, Ferro Frit 3124, Ferro Frit 3134, Do you know the purpose of these common Ferro frits?

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of