This assessment was prepared in support of the National Defense Stockpile Program’s 2019 biennial report to Congress, Strategic and Critical Materials 2019 Report on Stockpile Requirements, which estimates the demand and supply of strategic and critical materials under a statutorily mandated national emergency planning scenario. An assessment of high purity chromium and high purity vanadium (mainly in the form of vanadium-aluminum master alloys) used in applications such as gas-turbine engines was performed. The purpose of the supply chain assessment is to provide a comprehensive qualitative and quantitative analysis of the military and strategic dependence of the United States on this material.