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Hommel Frit 437

Description: Lead alumina bilsilicate (small amount of alkali)

Oxide Analysis Formula
CaO 0.10% 0.01
K2O 1.40% 0.05
Na2O 0.30% 0.01
PbO 67.80% 0.93
Al2O3 2.30% 0.07
SiO2 28.10% 1.44
Oxide Weight 307.46
Formula Weight 307.46

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 Ferro Frit 3403
Materials Pemco Frit Pb-723
Materials Fusion Frit FL-42
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 11.1 x 10-6
Frit Softening Point 1370F
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