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Pemco Frit Pb-674

Alternate Names: Frit Pb674

Description: Low expansion (low alkalia) low-lead glaze frit

Oxide Analysis Formula Tolerance
CaO 6.90% 0.63
K2O 1.10% 0.06
Na2O 2.80% 0.23
PbO 3.50% 0.08
B2O3 24.20% 1.78
Al2O3 5.60% 0.28
SiO2 55.90% 4.76
Oxide Weight 511.47
Formula Weight 511.47

Related Information

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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 Hommel Frit 576
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.

Data

Co-efficient of Linear Expansion 5.2 x 10-6 (50-450C)
Frit Melting Range (C) 1540-1680F
I.F.P. (celsius) 645C
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