Aerospace and Defense Consortium finds safer alternatives to hexavalent chromium

Led by Toxics Use Reduction Institute (TURI) Research Manager Greg Morose, the Aerospace and Defense Hexavalent Chromium Free Consortium is on the verge of finding safer alternatives to hexavalent chromium for conversion coatings, which is typically the base coating layer applied to bare aluminum. 

The consortium, including Boeing, Lockheed Martin, NASA and Raytheon, has been working together since 2012 and has found safer alternatives to hexavalent chromium for sealants and bond primers. If this current phase of research is successful, hexavalent chromium could be eliminated from the entire coating system.

Lockheed Martin in Texas has completed the bare aluminum corrosion, neutral salt spray and paint adhesion performance testing. NASA has started beachfront corrosion testing at the Kennedy Space Center in Florida. TURI will conduct statistical analysis on the performance test results. A complete report of testing results and recommended safer alternatives is expected in the first quarter of 2021. View TURI’s website for details and published research reports. Contact Greg Morose for more information.

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