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Pemco Frit Pb-1421
Alternate Names: Frit Pb1421
Description: Leaded low borax frit
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| 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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