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一、前言随着我国冶金、石油化二等工业迅速发展,对低温材料的要求也日益增多。过去一直沿用镍铬不锈钢及有色金属。在毛主席革命路线光辉指引下,我国低温钢的发展取得了很大的成绩,特别是无产阶级文化大革命以来,狠批了刘少奇一类骗子推行的“爬行主义”、“洋奴哲学”反革命修正主义路线,广大工人阶级以实际行动为伟大领袖毛主席争光,为伟大的社会主义祖国争光,研制出一系列符合我国资源的低温和抗磁用新钢种,20Mn23Al 就是其中的一个,这是贯彻毛
I. Preface As China’s metallurgy, petrochemical industry, the rapid development of the second, the requirements for low-temperature materials are also increasing. In the past has been using nickel-chromium stainless steel and non-ferrous metals. Under the brilliant guidance of Chairman Mao’s revolutionary line, great achievements have been made in the development of low-temperature steel in our country. In particular, since the Great Proletarian Cultural Revolution, the “creepism” and “slave-slave philosophy” counterrevolutionary revisionism Line, the majority of the working class to take practical actions as the great leader Chairman Mao glory, glory for the great socialist motherland, developed a series of low temperature and diamagnetism steel resources in line with China’s resources, 20Mn23Al is one of them, which is implementing the hair