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Hommel Frit 447

Description: Low lead calcium borate frit

Oxide Analysis Formula Tolerance
K2O 1.40% 0.05
Na2O 2.48% 0.14
CaO 7.85% 0.47
MgO 0.95% 0.08
PbO 17.27% 0.26
Al2O3 9.28% 0.31
B2O3 4.50% 0.22
SiO2 56.27% 3.17
Oxide Weight 338.14
Formula Weight 338.14

Related Information

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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 8.0 x 10-6
Frit Softening Point 1650F
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