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Pemco Frit Pb-1421

Alternate Names: Frit Pb1421

Description: Leaded low borax frit

Oxide Analysis Formula
CaO 8.30% 0.50
K2O 1.80% 0.06
Na2O 2.70% 0.15
PbO 19.30% 0.29
B2O3 6.00% 0.29
Al2O3 6.50% 0.21
SiO2 55.40% 3.10
Oxide Weight 336.61
Formula Weight 336.61

Notes

Frit for all-fritted base firing in the range of Cone 05 through Cone 6. This glaze is somewhat similar to a blend of Pb-349 and Pb-742

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.
Typecodes Leaded Frit
Frits can contain 1% or 80% PbO so this category can be misleading, check the chemistry to find out.
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 6.6 x 10-6 (50-450C)
Frit Softening Point 1550F
Frit Melting Range (C) 1500-1650F
I.F.P. (celsius) 610C
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