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Scrap is an important raw material applied in the production of tool steels by electric arc furnace metallurgy. Its composition and especially its contents of residual elements can have a crucial influence on the properties of the steels produced. Resuming the results of a former ECSC-sponsored research project, the working properties and the properties important for the use of the steel as a tool were investigated using thirteen heats of hot-work tool steel X38CrMoV5-1 (material-no. 1.2343) that contained different contents of the residuals copper, nickel, phosphorus and aluminium. The properties investigated comprised of continuous castability, hot workability as well as mechanical-technological properties at room temperature and at elevated temperature. The elements phosphorus with a content of up to 0,021 mass.-% and aluminium with contents of up to 0,025 mass.-% were closely associated with a deterioration of ductility and toughness at room temperature as well as at elevated temperature. Likewise hot workability was impaired. Copper contents of up to 0,38 mass.-% reduced the time-dependent properties and ductility .Of the residuals investigated, nickel with a content of up to 0,49 mass.-% was the least harmful. Considering the custom-designed requirements on hot-work tool steels maximum upper limits are suggested for the elements investigated.

Additional information

Authors: ERNST C, Edelstahl Witten-Krefeld GmbH, Witten (DE);WEWERS B, Edelstahl Witten-Krefeld GmbH, Witten (DE);IDOYAGA Z, Sidenor I+D, Basauri (ES);DETERDING D, Kind & Co Edelstahlwerk, Wiehl (DE);TRUBITZ P, TU Bergakademie Freiberg, Aachen (DE);PANT M, RWTH Aachen, Freiberg (DE);SCHWEIGER H, Böhler Edelstahl GmbH, Kaplenberg (AT);LÖFFLER D, Schmidt + Clemens GmbH + Co., Lindlar (DE)
Bibliographic Reference: EUR 20906 EN (2003), 224pp. Euro: 35
Availability: EUR-OP reference: KI-NA-20906-EN-S Available from EUR-OP sales agents URL:
ISBN: ISBN: 92-894-6590-5
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