Ngaphandle kwelayini yezitena zeseramikhi eqhelekileyo (isitena serektri, isitena sesiqingatha serektri, iilayini zezitena zeleli, isitena esincinci, izitena zesiqingatha selayini.), iiseramikhi zechemshun zinamandla apheleleyo okubonelela ngeelayini zezitena ezenziwe ngobunjineli kwiintlobo zemilo yebhola. Njengelayini yezitena yomngxuma wokutyisa, umngxuma wokuphuma, umngxuma womntu kufuneka unqunyulwe ube yimo ekhethekileyo. Oku kuqinisekisa ukuba izithuba phakathi kweethayile ziyancitshiswa. Ithayile nganye yenzelwe ngokukodwa indawo yayo kwikhithi epheleleyo yethayile, ukuqinisekisa ukulingana okuqinileyo kunye nendawo encinci kwiindawo zokudibanisa. Iseti epheleleyo yeelayini zezitena inokuphucula ukusebenza kakuhle kokusila kwaye ithintele ukuchithwa kwezinto zokusila.
| Igama lesitena | Ubude | Ubude | Ububanzi-1 | Ububanzi-2 |
| Isitena esixande | 150 | 50/60/70 | 50 | 50 |
| Isitena esisixande esisiqingatha | 75 | 50/60/70 | 50 | 50 |
| Isitena seeleri | 150 | 50/60/70 | 50 | 45 |
| Isitena esibhityileyo | 150 | 50/60/70 | 22.5 | 21 |
| Isitena sesiqingatha seleli | 75 | 50/60/70 | 50 | 45 |
| Iyunithi: mm | ||||
| Isalathisi sokuSebenza | Uthotho lwe-92 | Uthotho lwe-95 |
| I-Al2O3 (%) | ≥ 92 | ≥ 95 |
| Ubunzima bukaMoh | 9 | 9 |
| Izinga lokufunxa amanzi (%) | < 0.01 | < 0.01 |
| Amandla okugoba, 20C, Mpa | 275 | 290 |
| Ukugoba amandla (i-Mpa) | 255 | 275 |
| Ubuninzi bobuninzi (g/cm3) | ≥ 3.60 | ≥ 3.65 |