船用轴系碳锰钢由于材料简单、价格低廉等因素在船用轴系用钢中占据很大比例,此类锻钢的交货条件通常为锻后正回火处理后交货,而力学性能中的韧性指标往往达不到船级社的要求。本文通过对轴系碳锰钢的成分优化及锻后热处理工艺的改进,基本解决了轴系碳锰钢中力学性能不合格的问 Marine shaft carbon-manganese steel due to simple materials, low prices and other factors in the marine shaft steel accounts for a large proportion of such forging steel delivery is usually forged after tempering delivery, and mechanical properties Toughness indicators often fail to meet the requirements of classification societies. In this paper, the composition optimization of shaft carbon-manganese steel and after-forging heat treatment process improvement, the basic solution to the shaft carbon-manganese steel unqualified mechanical properties