Abstract
The stressing of hot-work tool steels during service in forging dies has to be known and has to be taken into account beforehand when producing the steels. For improving the toughness properties in the transverse direction, particularly for high-alloyed hot-work steels, electroslag remelting presents itself as an economic process. The heat treatment of forging dies is of great significance. With respect to the proper performance of the heat treatment for the more common materials, indications are made as to the necessary transformation processes and as to the mechanical properties attainable at room temperature. The wide range of grades currently offered renders it difficult for the user to select the right type of hot-work steel for a particular application. For facilitating the selection of the correct grade and with respect to an efficient limitation of grades, the properties of hot-work steels at high thermal load are compared. These properties have been found by a short- and a long-time test. It is shown that all the different kinds of stressing occurring in practice can be covered by only six grades.
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