Ferro Frit 4108
A standard material in Glazecalc's library: its oxide analysis, unity contribution and hazards.
What it is
- Kind
- Frits
- Status
- Discontinued
- Formula
- SiO₂ 52.25%, Al₂O₃ 3.12%, B₂O₃ 19.33%, CaO 16.67%, Na₂O 8.63%
- Also called
- Frit 4108, KMP4108, DA4108, KPM 4108, Frit 4508, Frit 1077
- Made by
- Ferro Corporation (Aust.) Pty Ltd (Victoria, Australia)
- Sold in
- AU
- Similar materials
- Ferro Frit 3134
- Source
- Wellington Potters Supplies (NZ), Frit compositions table
Soft, lead-free, high-calcium borosilicate frit. It was Ferro Australia's counterpart of US Frit 3134, with a little alumina, and it appears in many older Australian earthenware and mid-fire recipes. Suppliers now sell US Ferro 3134 in its place, and Walker suggests 60% 3134-2 with 40% 3124 to imitate 4108.
Walker Ceramics already listed it as no longer available in October 2016.
Oxide analysis and unity formula
Glazecalc has the analysis of Ferro Frit 4108 as weight percent of the raw material. The unity contribution is the moles of each oxide in the amount of Ferro Frit 4108 that holds 1.0 mole of flux, which is how Glazecalc adds it into a recipe's unity formula.
| Oxide | Weight % | Unity contribution |
|---|---|---|
| SiO₂ | 52.25 | 1.992 |
| Al₂O₃ | 3.12 | 0.070 |
| B₂O₃ | 19.33 | 0.636 |
| CaO | 16.67 | 0.681 |
| Na₂O | 8.63 | 0.319 |
- Equivalent weight
- 229.09
- Fired weight
- 229.09
- Loss on ignition
- 0%
The equivalent weight is the grams of Ferro Frit 4108 that hold 1.0 mole of flux. The fired weight is what is left of that after firing.
Hazards and safety
Hazards: No SDS seen. Frit is a ground glass with no free crystalline silica; avoid breathing the fine dust.
Use it in a recipe
Add Ferro Frit 4108 to a recipe in the Glazecalc calculator to see what it does to a glaze's unity formula.