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2Cr_(13)Ni_4Mn_9(现国标定为2Cr_(13)Mn_9Ni_4)不锈钢板、带主要用于我国航空工业歼五、歼六、歼七、歼八和强五等不同机种,仅用于歼八的单机零件就有84项,规格有十四项之多。该钢种自六十年代初由苏联引进以来,由于缺乏深入系统的研究,因而生产一直不正常,生产部门和使用部门皆感到很大的困难,冷硬状态抗晶间腐蚀性能的合格率只有50％左右,生产的材料几乎有一半报废。因此生产部门不愿生产,使用单位拿不到合格的产品只好停工待料,每年使用单位要派出大批的人员往各处求援,生产部门和使用单位扯皮、告状之事从无间断过。这种情况严重的影响了我国航空工业的发展。为此,1983年1月,由国防科工委会与冶金部、航空工业部组织了由工厂、高校和研究院
2Cr_ (13) Ni_4Mn_9 (now national standard 2Cr_ (13) Mn_9Ni_4) stainless steel plate, mainly used in China’s aviation industry F-5, F-6, F-7, F-8 and strong five different models, only for the F- There are 84 stand-alone parts, specifications as many as fourteen. Since the introduction of the steel from the Soviet Union in the early 1960s, the production has not been normal due to the lack of in-depth and systematic research. Both the production department and the user department have encountered great difficulties. The pass rate of chilling resistance to intergranular corrosion is only About 50%, almost half of the material produced is scrapped. Therefore, the production departments are reluctant to produce and the units that can not obtain the qualified products have to stop working for supplies. Every year, the employing units have to send a large number of personnel to seek help everywhere. The production departments and the users of the units are wrangling and the reporting goes uninterrupted. This situation has seriously affected the development of China’s aviation industry. To this end, in January 1983, by the National Defense Commission and the Ministry of Metallurgical, Aviation Industry organized by the factories, universities and research institutes