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5Cr21Mn9Ni4N是各国普遍应用的发动机气阀用钢。作者较全面地测试了该钢的高温强度、高温持久性能及抗腐蚀性能,并与4Cr10Si2Mo钢、4Cr14Ni14W2Mo钢进行了对比。试验表明,5Cr21Mn9Ni4V钢的性能普遍优越。本文为发动机气阀用钢的选材提供了依据。
5Cr21Mn9Ni4N is widely used in various countries engine valve steel. The author comprehensively tested the steel’s high temperature strength, high temperature durability and corrosion resistance, and compared with 4Cr10Si2Mo steel, 4Cr14Ni14W2Mo steel. Experiments show that 5Cr21Mn9Ni4V steel generally superior performance. This article provides a basis for the selection of the engine valve steel.