English to Italian Tech/Engineering Engineering (general)

Come tradurreste "quenching and tempering hardness"?

- "Mn (manganese) has effects of increasing hardenability, suppressing the generation of ferrite, and obtaining an appropriate *quenching and tempering hardness*.
Moreover, Mn has a large effect on the improvement of machinability by being present as MnS which is a non-metallic inclusion. Although addition may be less than 0.1% to achieve these effects, addition of not less than 0.1% is defined. However, since excessive addition will increase the viscosity of the matrix, thereby deteriorating machinability, the amount of addition is not more than 1.5%."

- "As one example of sufficiently exhibiting the toughness improvement effect by Zn addition, a hot work tool steel relating to the present invention is preferably subjected to a homogenizing heat treatment, for example, during processing of a steel ingot after casting to finish it into a steel product. Further, the *quenching and tempering hardness* is preferably not more than 50 HRC, and is more preferably not more than 48 HRC."



Grazie !