Siffofin:
1.Higher temperate resistant tare da mai kyau refractoriness
2.Good yi a high temp refractoriness karkashin kaya
3.Excellent juriya a slag abrasion
4.Higher girma yawa
5.Lower bayyana porosity
6.Ƙananan ƙazanta
| Abu | Darasi na 91 | Darasi na 92 | Darasi na 93 | Darasi na 94 | Darasi na 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 |
| Bayyanar Porosity, ≤ | 18 | 18 | 18 | 18 | 18 |
| Girman girma, g/cm3 ≥ | 2.86 | 2.9 | 2.95 | 2.92 | 2.95 |
| Ƙarfin Murƙushe Sanyi Mpa, ≥ | 60 | 60 | 50 | 60 | 60 |
| 0.2Mpa Refractoriness Ƙarƙashin Load T0.6 ℃ |
≥1570 | ≥1560 | ≥1620 | ≥1650 | ≥1700 |
| Thermal Shock Resistances 100 ℃ ruwa hawan keke | ≥18 | ≥18 | ≥18 | ≥18 | ≥18 |