Abstract: The production process and actual product performances of ASTM A 387M Gr. 11 CL2 steel 24 mm plate for pressure vessels produced by Chongqing Iron and Steel Co Ltd are introduced. The rolling process and heat treatment of test steel (/% ：0.13C,0.56Si,0.56Mn,0.036Alt,0.005P,0.001S,l.02Cr,0.50Mo)300 mm x2010 mm casting slab are rough rolling at >1000 °C , thicknees of middle bloom 72 mm, finishing rolling at 880 ~ 940 °C , end finish rolling at 850 ~870 °C,laminar cooling to 690 -710 °C , air cooling to room temperature and normalizing at 890 〜910 °C, tempering at 650 ~ 670 °C. Practice shows that the performance indexes of the steel meet the technical requirements and the steel has good impact toughness at low temperature, i. e. the impact energy of test steel at -40°C is 149 ~ 172 J.

摘要： 介绍了重庆钢铁股份有限公司生产压力容器用ASTM A 387M Gr.11 CL2 24 mm钢板的生产工艺及实物性能。试验钢(/%:0.13C,0.56Si,0.56Mn,0.036Alt,0.005P,0.001S,1.02Cr,0.50Mo)300 mm×2010 mm铸坯粗轧开轧1000℃,中间坯厚度72 mm,精轧开轧880～940℃,精轧终轧850～870℃,层流冷却后690～710℃,空冷至室温后890～910℃正火,空冷至室温后650～670℃回火。实践表明,研发的该钢板各项性能指标均符合技术要求,且具有良好的低温冲击韧性,试验钢-40℃冲击功149～172 J。