Pemco Frit P-626

Alternate Names: Frit 626, Frit P626

Description: Low fire high-barium leadless borosilicate

Oxide	Analysis	Formula
BaO	27.40%	0.66
Na2O	5.60%	0.34
B2O3	12.40%	0.66
Al2O3	5.40%	0.20
SiO2	49.20%	3.04
Oxide Weight		371.67
Formula Weight		371.67

Notes

Add 10% clay for cone 06-02 glaze.
This is a high barium frit (and thus can have issues with leaching in glazes if not used properly). If you got a recipe on line for a functional glaze and it contains a significant percentage of this, and the source does not mention the barium content, then contact them and complain. Substitutes include Fusion F-65) but they require industrial-sized orders and ceramic suppliers do not resell it. But Lagunaclay.com sells Ferro Frit 3289, it is the same chemistry. Another options is to calculate how to source the BaO from other sources (e.g. barium carbonate), keeping the overall chemistry of the glaze the same (using your account at insight-live.com).

Related Information

My head was in the clouds and I appreciate the grounding!

She was searching for a a matte, mottled white, rustic. For functional surfaces. And it contained this frit. The source from which she got it did not mention the barium content. Barium is certainly not a requirement to achieve a matte surface at cone 6, there of lots of ways to do it. And there are multiple matte mechanisms that can be exploited.

Links

Materials	Ferro Frit 3289
Materials	General Frit GF-129
Materials	Fusion Frit F-65
Materials	Ferro Frit FB-284-M
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	Hommel Frit 400
Hazards	Barium Carbonate
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.

Data

Co-efficient of Linear Expansion	7.2 x 10-6 (50-450C)
Frit Melting Range (C)	1460-1570F

By Tony Hansen
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