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Pemco Frit Pb-349

Alternate Names: Frit Pb349

Description: Lead bearing, zincless, all-fritted glaze

Oxide Analysis Formula
CaO 10.40% 0.58
K2O 2.70% 0.09
Na2O 1.80% 0.09
PbO 17.10% 0.24
B2O3 8.00% 0.36
Al2O3 6.20% 0.19
SiO2 53.80% 2.80
Oxide Weight 312.80
Formula Weight 312.80


Used for vitreous and semi-vitreous dinnnerware and artware for cone 02-8.

Related Information


Materials Fusion Frit FL-4
Materials Pemco Frit P-786
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
Materials General Frit GF-18
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 6.5 x 10-6 (50-450C)
Co-efficient of Linear Expansion 6.5 x 10-6 (50-450C)
Frit Softening Point 1620F
Frit Melting Range (C) 1590-1670F
I.F.P. (celsius) 672C
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