THE U.S. NUCLEAR REGULATORY COMMISSION (NRC) is issuing this Sources Sought Synopsis as a means of conducting market research or as a market survey to determine the availability of potential qualified vendors with the technical capability to provide all management, supervision, administration, and labor for the assessment of high entropy or multi-principal element alloys for nuclear applications, with a view to helping the NRC determine the appropriate level of readiness that the agency would need to achieve to license such materials. The applicable North American Industry Classification System code assigned to this procurement is 541715, Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology & Biotechnology).