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Hommel Frit 441
Description: Low lead calcium zinc borate frit
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| BaO | 1.50% | 0.03 | |
| CaO | 7.03% | 0.40 | |
| K2O | 1.19% | 0.04 | |
| MgO | 0.38% | 0.03 | |
| Na2O | 2.76% | 0.14 | |
| PbO | 17.71% | 0.26 | |
| ZnO | 2.35% | 0.09 | |
| B2O3 | 5.60% | 0.26 | |
| Al2O3 | 9.04% | 0.29 | |
| SiO2 | 52.44% | 2.82 | |
| Oxide Weight | 322.69 | ||
| Formula Weight | 322.69 | ||
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 | 8.1 x 10-6 |
|---|---|
| Frit Softening Point | 1640F |
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