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Description: Low lead calcium borate frit
| Oxide | Analysis | Formula | Tolerance | 
|---|---|---|---|
| CaO | 10.11% | 0.57 | |
| K2O | 3.03% | 0.10 | |
| Na2O | 1.54% | 0.08 | |
| PbO | 18.04% | 0.25 | |
| B2O3 | 8.81% | 0.40 | |
| Al2O3 | 5.91% | 0.18 | |
| SiO2 | 52.05% | 2.72 | |
| Oxide Weight | 312.82 | ||
| Formula Weight | 312.82 | ||
| 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 | 
Ferro Frit 3509
 | 
| 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.  | 
| Co-efficient of Linear Expansion | 7.10 | 
|---|---|
| Co-efficient of Linear Expansion | 7.1 x 10-6 (50-450C) | 
| Frit Softening Point | 1600F | 
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