Feartan:
1.Higher teas-dhìonach le deagh refractoriness
2.Good coileanadh ann an àrd temp refractoriness fo luchd
3.Excellent an aghaidh ann an slag abrasion
4.Higher dùmhlachd lìonaidh
5.Lower follaiseach porosity
6.Lower susbaint impurity
| Nì | Ìre 91 | Ìre 92 | Ìre 93 | Ìre 94 | Ìre 97 |
| MgO, % ≥ | 91 | 92 | 93 | 94.5 | 97 |
| SiO2, % ≤ | 4 | 3.5 | 2.5 | 2 | 2 |
| Fe2O3, % ≤ | 1.3 | - | - | 1.2 | 1.2 |
| CaO, % ≤ | 2.5 | 2.5 | 2 | 1.8 | 1.8 |
| Porosity follaiseach, % ≤ | 18 | 18 | 18 | 18 | 18 |
| Meud mòr, g / cm3 ≥ | 2.86 | 2.9 | 2.95 | 2.92 | 2.95 |
| Neart crathaidh fuar Mpa, ≥ | 60 | 60 | 50 | 60 | 60 |
| Refractoriness 0.2Mpa Fo Load T0.6 ℃ |
≥1570 | ≥1560 | ≥1620 | ≥1650 | ≥1700 |
| Frith-aghaidh clisgeadh teirmeach cearcallan uisge 100 ℃ | ≥18 | ≥18 | ≥18 | ≥18 | ≥18 |