Reference data for common engineering materials including hardness, machinability ratings, and recommended cutting parameters.
About machinability scores: Ratings are based on the AISI machinability index, an industry-standard scale where AISI 1212 free-cutting steel is the baseline at 100%. All other materials are rated as a percentage relative to that baseline. Values are sourced from widely published machining references including Machinery's Handbook and ASM International data.