Hommel Frit 447
Description: Low lead calcium borate frit
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| K2O | 1.40% | 0.05 | |
| Na2O | 2.48% | 0.14 | |
| CaO | 7.85% | 0.47 | |
| MgO | 0.95% | 0.08 | |
| PbO | 17.27% | 0.26 | |
| Al2O3 | 9.28% | 0.31 | |
| B2O3 | 4.50% | 0.22 | |
| SiO2 | 56.27% | 3.17 | |
| Oxide Weight | 338.14 | ||
| Formula Weight | 338.14 | ||
Related Information
Links
| 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 | 8.0 x 10-6 |
|---|---|
| Frit Softening Point | 1650F |