I-advanteji:
Olu yilo lubangela ukuchasana okuphezulu kwi-thermal shock, ukhukuliseko, ukuxhathisa i-oxidation kunye nenkonzo ende.
Babonisa iimpawu zokuxhathisa ukothuka kwe-thermal, ukusebenza okuzinzileyo, ukugqwala okulungileyo kunye nokumelana nokukhukuliseka, kunye nokumelana nokuqhekeka okunamandla.| Iimpawu | Phezulu kunye nokuqokelela umlomo | ||
| ZA70 | ZA75 | ZA80 | |
| Al2O3≥ | 70 | 75 | 80 |
| C ≥ | 3 | 3 | 3 |
| Uxinaniso olukhulu(g/cm3) ≥ | 2.7 | 2.85 | 2.85 |
| I-porosity ebonakalayo ≤ | 10 | 10 | 10 |