.

| Item | Indeks | Unit | data |
| 1 | gravitasi spesifik akeh | g/cm3 | 3.2~3.3 |
| 2 | tingkat ekspansi rata-rata (20-1000 ℃) | 10-6/k | 6.6~8 |
| 3 | Konduktivitas termal | W/(mk) | 2.6~3.8 |
| 4 | Panas spesifik | KJ/Kg.k | 1.2~1.4 |
| 5 | refractoriness ing beban | ℃ (0.2Mpa) | 1660 |
| 6 | resistance kejut termal | ℃ / 3 kaping | 427 |
| 7 | Soften asor | ℃ | 1730 |
| 8 | Suhu Operasi Maksimum | ℃ | 1650 |
| 9 | resistance asam | % | 99.54 |
| 10 | fastness kanggo alkali | % | 98.05 |
| 11 | panyerepan banyu | % | 5~10 |
| Komposisi kimia | |
| Komposisi | data(%) |
| SiO2 | 6~8 |
| A12O3 | > 90 |
| liyane | <4 |