EVALUATION OF MACHINABILITY DATA

Systematic materials selection is essential to fulfill the design crit eria. Reliable information on material properties, in turn, is a vital factor for approaching such an objective. The machinability of engine ering metals, owing to the marked influence on the production costs, h as to be taken into account in the process of materials selection. In an attempt to develop a method for estimating the machinability of eng ineering metals, machinability data collected from laboratory and lite rature are assessed. A rating system derived from the metal removal ra te is proposed for estimating the relative machinability of carbon and alloy steels, stainless steels, and aluminum, copper, and magnesium a lloys.