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Pemco Frit Pb-742

Alternate Names: Frit Pb742

Oxide Analysis Formula
CaO 4.50% 0.29
Na2O 3.60% 0.21
PbO 31.00% 0.50
ZrO2 1.00% 0.03
B2O3 13.00% 0.67
Al2O3 3.40% 0.12
SiO2 43.50% 2.61
Oxide Weight 360.79
Formula Weight 360.79

Notes

Blend with Pb-349 for intermediate temperatures. Pb-63 has slightly more zirconia.

Similar to alternatives but has small amount of ZrO2 smelted in.

Related Information

Links

Materials General Frit GF-27
Materials Ferro Frit 3576
Materials Ferro Frit 3493
Materials Ferro Frit 3485
Materials Frit
Materials Pemco Frit Pb-63
Materials Fusion Frit FL-28
Typecodes Leaded Frit
Frits can contain 1% or 80% PbO so this category can be misleading, check the chemistry to find out.
Typecodes Frit

Data

Co-efficient of Linear Expansion6.5 x 10-6 (40-450C)
Frit Melting Range (C)1350-1450F
I.F.P. (celsius)585C

By Tony Hansen


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