一、研究与进展 经过“六五”攻关,我国低合金钢和钒钛钢的科研和生产有了很大的进展。1980年低合金钢的产量为302.5万吨,1985年增至618.66万吨,翻了一番。占钢总产量的比重,相应地由8.1％上升到13.2％,其中低合金钢筋增长了115％,低合金高强度结构钢增长了65％,低合金耐大气腐蚀钢增长了300％,矿用低合金钢增长130％, I. Research and Progress After the “6th Five-Year Plan”, great progress has been made in the research and production of low-alloy steel and vanadium-titanium steel in China. The output of low-alloy steel in 1980 was 3.025 million tons, which doubled to 618.66 million tons in 1985. Accounting for the proportion of the total steel output, correspondingly increased from 8.1% to 13.2%, including low-alloy steel increased by 115%, low-alloy high-strength structural steel increased 65%, low alloy weathering steel increased by 300%, mining Low-alloy steel increased by 130%