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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!

Tap picture for full size and resolution

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
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