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<a href="https://www.xinliabrasive.com/Brown-Fused-Alumina.html"><img loading="lazy" decoding="async" src="/wp-content/uploads/2022/05/brown-corundum2.jpg" alt="" class="wp-image-239 size-full aligncenter" width="1000" height="939" srcset="https://www.xinliabrasive.com/wp-content/uploads/2022/05/brown-corundum2.jpg 1000w, https://www.xinliabrasive.com/wp-content/uploads/2022/05/brown-corundum2-300x282.jpg 300w, https://www.xinliabrasive.com/wp-content/uploads/2022/05/brown-corundum2-768x721.jpg 768w" sizes="auto, (max-width: 1000px) 100vw, 1000px" /></a>
<a href="https://www.xinliabrasive.com/Brown-Fused-Alumina.html">Brown fused alumina</a>, also known as brown corundum, has different quality levels&#8211; the first level brown fused alumina and the second level brown fused alumina.
 
The levels of <a href="https://www.xinliabrasive.com/Brown-Fused-Alumina.html">brown fused alumina</a> mainly depend on the content of Al2O3, which is the main component of brown fused alumina. First level brown fused alumina has 94-95% Al2O3. Second level brown fused alumina has only 88-91%Al2O3.
Besides, the main usage of these two levels <a href="https://www.xinliabrasive.com/Brown-Fused-Alumina.html">brown fused alumina</a> is also different. First level brown fused alumina is mainly used for grinding and polishing, precision casting. Besides, 20#, 24#, 30#, 36#. 40# and 46# first level brown fused alumina is specially used for grinding wheels. However, the main application for second brown fused alumina is sandblasting.
All in all, please pay more attention to Al2O3 content when you use <a href="https://www.xinliabrasive.com/Brown-Fused-Alumina.html">brown fused alumina</a> for different situations.