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Pemco Frit Pb-461

Alternate Names: Frit Pb461

Description: Very low expansion lead-borosilicate

Oxide Analysis Formula
PbO 43.20% 1.00
B2O3 21.90% 1.63
SiO2 34.90% 3.00
Oxide Weight 516.67
Formula Weight 516.67

Notes

Added to glazes to prevent crazing, also used in low fire cone 012-06 glazes.

Related Information

Links

Materials Pemco Frit P-941
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 General Frit GF-8
Materials Hommel Frit 1006
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 5.20
Co-efficient of Linear Expansion 5.2 x 10-6 (50-450C)
Frit Softening Point 1480F
Frit Melting Range (C) 1460-1500F
I.F.P. (celsius) 525C
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