MAGMA has been supplied Corundum Mullite Crucibles for long time. We use high purity White Fused Mullite, Spinel and fused mullite as raw materials under our unique techniques. It has very good performance for smelting high temperature alloys, Magnetics, Non-ferrous metals, special ceramic and rare earth phosphor.
| Item | Guarantee Value | |
| Chemical% | Al2O3 | ≥90 |
| SiO2 | ≥9 | |
| Fe2O3 | ≤0.1 | |
| B.D.（g/cm³） | ≥3 | |
| A.P.％ | ≥18 | |
| C.C.S. Mpa | ≥88 | |
| RUL Mpa | ≥13.7 | |
| Max Service Temperature℃ | 1720 | |
