|Monthly Tech-Tip |
Alternate Names: Frit Pb1B20
Description: Lead-alumina-silicate low expansion frit
Relatively high melting point and low coefficient of expansion. Tends to devitrify.
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.
Frits can contain 1% or 80% PbO so this category can be misleading, check the chemistry to find out.
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||4.70|
|Co-efficient of Linear Expansion||4.7 x 10-6 (50-450C)|
|Frit Softening Point||1850F|
|Frit Melting Range (C)||1800-2050F|
|By Tony Hansen|
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