Solar Atmospheres Inc. renewed its approved-supplier status with Sikorsky Aircraft Corporation with a two-year certification. Solar is approved to provide heat treatment of titanium and carburizing-grade materials and aircraft-grade steels in accordance with various AMS and Sikorsky specifications. In addition to maintaining current approvals, Solar also gained full approval for laboratory testing, metallography and microhardness testing for Sikorsky products. Solar Atmospheres Inc. has been Sikorsky-approved since the 1990s.