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Pemco Frit Pb-1B20

Alternate Names: Frit Pb1B20

Description: Lead-alumina-silicate low expansion frit

Oxide Analysis Formula
PbO 50.00% 1.00
Al2O3 20.00% 0.88
SiO2 30.00% 2.23
Oxide Weight 446.40
Formula Weight 446.40


Relatively high melting point and low coefficient of expansion. Tends to devitrify.

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.
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 4.70
Co-efficient of Linear Expansion 4.7 x 10-6 (50-450C)
Frit Softening Point 1850F
Frit Melting Range (C) 1800-2050F
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