高强韧SA508Gr.4N锻件国产化研制

Domestic Development of High Strength and Toughness SA508Gr.4N Forgings

介绍中国一重高强韧SA508Gr.4N钢锻件的最新国产化研制进展。在ASME标准的基础上,提出更高的国产化SA508Gr.4N钢性能指标。锻件性能优异,具有高强韧性,各项性能较核级SA508Gr.3钢锻件有大幅度提升。讨论今后SA508Gr.4N钢工程化应用的主要研发目标。

This paper introduces the latest domestic development of the high strength and toughness SA508Gr.4N steel forgings of CFHI.On the basis of ASME standard,higher performance criterion of the domestic SA508Gr.4N steel is proposed.The forgings have excellent performance,high strength and toughness,and all properties are greatly improved compared with nuclear grade SA508Gr.3 steel forgings.The main research and development targets for engineering application of SA508Gr.4N steel are discussed.