一、前言 12MnAlMoV钢是由我厂及有关科研设计单位、高等院校共同研制成功的一种无铬含铝抗高温硫腐蚀的普通低合金钢。该钢价格低廉、制造工艺简单、性能良好,并能适应我国炼油行业的需要。该钢种的试制成功填补了我国这方面材料的空白,并为进一步发展可焊性良好的含铝低合金钢打开了新局面。六十年代中期,我国某些新开发油田的原油中含硫较高,导致以普碳钢为主的石油炼制设备腐蚀加快、更新率提高。为解决这一问题,1967年组成了课题组,经过十多年 I. Introduction 12MnAlMoV steel is a common low-alloy steel which is successfully developed by our factory, relevant research institutes and institutions of higher learning in a non-chromium and aluminum-containing high temperature sulfur corrosion-resistant steel. The steel is cheap, the manufacturing process is simple, good performance, and can adapt to the needs of China’s oil refining industry. The successful trial of this kind of steel filled the blank of this kind of material in our country and opened up a new situation for the further development of the low aluminum alloy steel with good solderability. In the mid-1960s, the sulfur content of crude oil in some newly developed oilfields in our country was so high that corrosion of petroleum refining equipment mainly based on general carbon steel accelerated and the update rate increased. To solve this problem, in 1967 formed a research group, after more than a decade