Chromium % of chrome fused alumina
Chrome fused alumina ,also called pink fused alumina,is obtained by adding chromium oxide to high purity aluminum oxide during the fusion process.
According to the additive amount of chromium oxide,chrome fused alumina is divided to lowe chromium ,medium chromium and high chromium,and the chemical composition is as follows:
Chrome Fused Alumina(Low Chromium)
| Size | Al2O3（%） | Cr2O3（%） | Na2O（%） | Fe2O3（%） |
| F012 F014 F016 F020 F022 F024 F030 F036 F040 F046 F054 F060 F070 F080 | ≥98.5 | 0.2-0.45 | ≤0.3 | 0.01-0.05 |
| F090 F100 F120 F150 | ≥98.5 | 0.2-0.45 | ≤0.35 | 0.01-0.05 |
| F180 F220 | ≥98.0 | 0.2-0.45 | ≤0.40 | 0.01-0.05 |
Chrome Fused Alumina(Medium Chromium)
| Size | Al2O3（%） | Cr2O3（%） | Na2O（%） | Fe2O3（%） |
| F012 F014 F016 F020 F022 F024 F030 F036 F040 F046 F054 F060 F070 F080 | ≥98.2 | 0.45-1.00 | ≤0.30 | 0.01-0.05 |
| F090 F100 F120 F150 | ≥98.2 | 0.45-1.00 | ≤0.35 | 0.01-0.05 |
| F180 F220 | ≥97.8 | 0.45-1.00 | ≤0.40 | 0.01-0.05 |
Chrome Fused Alumina(High Chrominum)
| Size | Al2O3（%） | Cr2O3（%） | Na2O（%） | Fe2O3（%） |
| F012 F014 F016 F020 F022 F024 F030 F036 F040 F046 F054 F060 F070 F080 | ≥97.4 | 1.00-2.00 | ≤0.30 | 0.01-0.05 |
| F090 F100 F120 F150 | ≥97.0 | 1.00-2.00 | ≤0.35 | 0.01-0.05 |
| F180 F220 | ≥96.5 | 1.00-2.00 | ≤0.40 | 0.01-0.05 |
Besides,the color of the low,medium,high chromium chrome fused alumina with same size is different,for example F80:
 |  |  |
| High chromium | Medium Chromium | Low Chromium |
