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Ceradel Frit C 1249

Alternate Names: C1249 Fritte, C 1249 Fritte, Ceradel Frit 1249,C-1249

Description: Lead bisilicate frit, Bisilicate de plomb

Oxide Analysis Formula
PbO 70.00% 1.00
SiO2 19.00% 1.01
B2O3 11.00% 0.50
Oxide Weight 318.86
Formula Weight 318.86


Similar to a lead bisilicate, but with significant boron.

We have another source that says this is just a lead bisilicate. So the analysis is uncertain.

Related Information


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 Lead Bisilicate Frit
A standard frit of 1 molar part of PbO and 2 of SiO2. It is considered stable and non-leachable.
Materials Ceradel Frit C 1250
Materials Ceradel Frit C 1251
Typecodes Leaded Frit
Frits can contain 1% or 80% PbO so this category can be misleading, check the chemistry to find out.


Co-efficient of Linear Expansion 85 (10-7/C 20/300C)
Frit Softening Point 600-700C
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