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研制的２５Ｗ３Ｍｏ４Ｃｒ２Ｖ７Ｃｏ５高初高硬高速钢的共晶碳化物尺寸平均为２～４μｍ，最大约为８μｍ；经最佳规范过饱和渗碳后碳化物尺寸平均为４～６μｍ，最大亦仅为１０μｍ。热处理后的硬度可达ＨＲＣ６７～７０，用该钢制造的车刀，其耐用度显著高于Ｗ１８Ｃｒ４Ｖ钢。
The eutectic carbide size of the 25W3Mo4Cr2V7Co5 high initial high hardness hard steel developed on average was 2 ~ 4μm and the maximum was about 8μm. The average size of carbides was 4 ~ 6μm and the maximum was only 10μm after supersaturated carburization. Hardness after heat treatment up to HRC67 ~ 70, the lathe made of steel, the durability was significantly higher than the W18Cr4V steel.