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Alternate Names: Frit B-300

Description: Lead alumina bilsilicate frit

Oxide Analysis Formula
PbO 65.00% 1.00
Al2O3 3.00% 0.10
SiO2 32.00% 1.83
Oxide Weight 343.38
Formula Weight 343.38


Raw color: Very light yellow
Form: Granular or finely ground frit
Specific Gravity: 4.6 g/cm3
Density, lbs/cu ft, Granlar: 155-175; Ground: 135-155
Melting Range: 788-816C
COE: 7.1 x 10-6

The powdered material is ~2% +200 mesh.

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 Ferro Frit 3626
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 Lead Bisilcate B-15
Materials BPS Lead Bisilicate
Materials Ferro Frit 3489
Materials Ceraflux
Materials Frit 3647
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.
Hammond Lead Products Ceraflux lead bisilicate data sheet


Frit Softening Point 800C
Frit Softening Point 788-816C
Density (Specific Gravity) 4.50
Density (Specific Gravity) 4.55-4.7
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