Abstract
1. The modulus of elasticity E at 20–625°C is highest for high-speed tungsten-molybdenum steel R8M3K6S and R6M5 with HRC 63-67. 2. The lower homogeneity of the structure induced by uneven distribution of carbides in high-speed steel or the formation of excess ferrite in die steels lowers the modulus of elasticity. 3. In all steels investigated the modulus of elasticity decreases almost linearly with increasing temperature.
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