|If this formula is not unified correctly please contact us.|
|PCE - Pyrometric Cone Equivalent||29-30|
|WABS - Water absorption||Cone 1: 1.4% Cone 5: 0.3|
|FSHR - Firing Shrinkage||Cone 1: 8.9% total Cone 5: 9.1 (overfired)|
|UPSD - Ultimate Particle Size Distribution||10 microns: 89% 5: 84% 2: 67% 1: 54% 0.5: 43%|
A description we have inherited (but do not know from where) is that this is "a red burning material used in the formulation of clay bodies to provide maturity and color at all temperature ranges". This description is impossible, no clay can provide maturity at all temperatures, and the chemistry we have indicates that it would not be a mature-firing material at common kiln firing ranges.
We have no indication of its physical working properties (e.g. plasticity, drying shrinkage, texture). We do not currently have a source for any other physical data. That data shown here is likely not correct (a clay with a PCE of 30 would not have 1.4% porosity at cone 1)! That being said, a clay with this chemistry would be more refractory that is shown by this data also).
Based on the chemistry this appears to be a fairly refractory material (however it has enough fluxes that it is not likely a fireclay). It has fairly high Al2O3 content so likely has some kaolin content. Redart, a low-firing material, would likely not be a good substitute in a recipe. Fire-Red from Plainsman Clays, is likely a little more refractory. Plainsman Redstone is likely less refractory.
Out Bound Links
Newman Fireclay, Newman Slip