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Pemco Frit Pb-742

Alternate Names: Frit Pb742

Description: Leaded zincless frit cone 08-1.

Oxide Analysis Formula
CaO 4.50% 0.29
Na2O 3.60% 0.21
PbO 31.00% 0.50
ZrO2 1.00% 0.03
B2O3 13.00% 0.67
Al2O3 3.40% 0.12
SiO2 43.50% 2.61
Oxide Weight 360.79
Formula Weight 360.79


Blend with Pb-349 for intermediate temperatures. Pb-63 has slightly more zirconia.

Similar to alternatives but has small amount of ZrO2 smelted in.

Related Information


Materials General Frit GF-27
Materials Ferro Frit 3576
Materials Ferro Frit 3493
Materials Ferro Frit 3485
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 Pemco Frit Pb-63
Materials Fusion Frit FL-28
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 (40-450C)
Frit Melting Range (C) 1350-1450F
I.F.P. (celsius) 585C
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