Workpiece Material Group Speed & Feed Quick-Reference Card

A Workpiece Material Group Speed & Feed Quick-Reference Card is a standardized, condensed technical resource that provides empirically validated or manufacturer-recommended cutting speeds (Vc), feed per tooth (fz), and depth of cut (ap) values grouped by ISO or DIN workpiece material classifications (e.g., P for steels, M for stainless steels, K for cast irons). It serves as an initial starting point for CNC machinists and process engineers to select safe, efficient, and tool-life-optimized machining parameters. The card balances productivity, surface integrity, and tool wear by accounting for material hardness, microstructure, and thermal properties.