Abstract: The basic performance requirements of the special stainless steel plates of the MARK III cargo containment system are analyzed based on the working characteristics of the system. The production process and key quality control points for the production of the special stainless steel plates are summarized to ensure their quality and performance. The performance of the special stainless steel plate is compared with that of the conventional AISI 304L stainless steel plate. The characteristics of the special stainless steel are analyzed based on the test results.