English to Italian Tech/Engineering Engineering (general)

Come tradurreste "hot work tool steel"? Io tradurrei così: "acciaio per utensili di lavorazione a caldo"?

Titolo brevetto: " HOT WORK TOOL STEEL HAVING EXCELLENT TOUGHNESS, AND PROCESS OF PRODUCING SAME" (EP 2682491)
In francese: "ACIER POUR OUTIL DE TRAVAIL À CHAUD DOTÉ D’UNE EXCELLENTE TÉNACITÉ ET SON PROCÉDÉ DE PRODUCTION"
In tedesco: "WARMARBEITSSTAHL MIT AUSGEZEICHNETER ZÄHIGKEIT UND VERFAHREN ZU SEINER HERSTELLUNG"

"The present invention relates to a *hot work tool steel* having improved toughness, which is optimally used for various kinds of hot work tools such as stamping dies, forging dies, die-casting molds and extrusion tools, and a process of producing the same.
BACKGROUND ART
A hot work tool needs to have both strength and toughness so as to be able to withstand thermal fatigue and impact since it is used while being in contact with a high-temperature workpiece and/or a hard workpiece."


Grazie !