Abstract
1. After LTMT, medium-carbon die steels 4Kh4VMFS, 4Kh5MF1S, and 6KhV2S obtain a better set of mechanical properties, compared with the properties of high-chromium steels Kh12F1, Kh12M, and Kh6VF, and fast-cutting steels R18, R12, and R6M5. 2. In order to provide the optimum set of mechanical properties after LTMT, the hardness of steels 4Kh4VMFS and 4Kh5MF1S should be HRC 58–60, and for steels Kh6VF and 6KhV2S it should be HRC 60-62.
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