Abbots Frit 627 Balanced (Ca-Ba-Bo-K-Na-Si-Al)
Abbots Frit 627 Balanced (Ca-Ba-Bo-K-Na-Si-Al)
Regular price
$79.00 NZD
Regular price
Sale price
$79.00 NZD
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Abbots Frit 627
Oxide |
Analysis |
BaO |
8 |
CaO |
5.9 |
MgO |
1.5 |
K2O |
1.1 |
B2O3 |
8 |
Al2O3 |
6.3 |
SiO2 |
69.2 |
|
|
|
|
Calculated Thermal Expansion 5.4 |
|
|
|
Ratios |
|
Si:Al Ratio: |
18.6:1 |
SiB:Al Ratio: |
20.5:1 |
Alkali Ratio: |
0.1:0.9 |
Notes:
This frit also has the chemistry of a clear glaze as it stands. Unusually, it has an ultra-low COE of only 5.4. Great to add as a substitute for other frits where glazes may be crazing. Needs some feldspar or nepheline syenite to raise COE to normal levels and of course some kaolin to suspend.
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