High-alumina refractory and PES belong to fundamentally different material chemistries. High-alumina refractory is a ceramic material, while PES is polymeric. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 7 material properties with values for both materials. Properties with values for just one material (25, in this case) are not shown.
For each property being compared, the top bar is high-alumina refractory and the bottom bar is PES.