SH010/SH020牌号材料通过技术鉴定

Core Viewpoint - The domestic development and application of urea-grade austenitic stainless steel materials SH010(25-22-2) and SH020(316L mod) have achieved international advanced levels, as confirmed by a technical appraisal committee [1][2]. Group 1: Technical Achievements - The technical indicators of SH010 and SH020 meet the standards set by the United States and Europe, as well as the requirements from internationally renowned urea engineering companies [1]. - The expert committee unanimously agreed to pass the technical appraisal and recommended accelerating the promotion and application of these materials in relevant fields [1]. Group 2: Material Properties - Analysis of the chemical composition of SH010 and SH020 shows low levels of harmful impurities and good control of non-metallic inclusions [2]. - The microstructure is fully austenitic, with no σ phase or intergranular/intragranular compounds detected [2]. - The corrosion resistance of these materials is comparable to or slightly better than that of foreign counterparts in similar working conditions [2]. Group 3: Product System and Applications - The SH010 and SH020 series have formed a complete product system covering plates, heat exchange tubes, steel pipes, forgings, bars, and fittings [2]. - These products are currently applied in over 40 projects across 19 major state-owned enterprises, with annual production capacities ranging from 300,000 to 1,050,000 tons for urea and melamine plants [2]. Group 4: Supply Chain Collaboration - A comprehensive supply chain service mechanism has been established, with Fushun Special Steel and Zhongxing Equipment focusing on manufacturing, while Dalian Songhai ensures direct supply and lifelong service [2]. - The collaboration includes a tripartite inspection responsibility to ensure material quality and stabilize market supply and demand, thereby avoiding chaotic market competition [2].