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Hommel Frit 441

Description: Low lead calcium zinc borate frit

Oxide Analysis Formula
BaO 1.50% 0.03
CaO 7.03% 0.40
K2O 1.19% 0.04
MgO 0.38% 0.03
Na2O 2.76% 0.14
PbO 17.71% 0.26
ZnO 2.35% 0.09
B2O3 5.60% 0.26
Al2O3 9.04% 0.29
SiO2 52.44% 2.82
Oxide Weight 322.69
Formula Weight 322.69

Related Information

Links

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.
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 8.1 x 10-6
Frit Softening Point 1640F
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