Washington Mills Mullite for Investment Cast


Washington Mills' DURAMUL is a fused mullite with no free silica. It is produced with slightly less silica and slightly higher alumina than stoichiometric mullite. Investment casters using cheaper raw materials who have concerns about the level of exposure to free silica should consider Washington Mills' fused mullite for shell building.  The properties of DURAMUL fused mullite are unique because Washington Mills controls the chemistry of the product through our own fusion process.



Please call us today to learn more about DURAMUL and how fused mullite can be used to reduce the exposure to free silica in your shell building operation. Contact Washington Mills at

info@washingtonnmills.com or 800-828-1666.



About Washington Mills

Washington Mills controls the chemistry of our fused mullite from start to finish. We fuse and process fused mullite in North America which gives us 100% control over the manufacturing process. This process and quality control allows us to manufacture DURAMUL, a high quality fused mullite product, to meet your raw material refractory needs.


Contact This Company

All Topics