Machinability Index

Written by Jerry Ratzlaff on . Posted in Manufacturing Engineering

Machinability index, abbreviated as Mi, a dimensionless number, is used to compare the machinability of different materials in the various cutting process.


Machinability Index Formula

\(\large{ Mi = \frac{ V_m }{ V_s } \; 100 }\)  


\(\large{ Mi }\) = machinability index

\(\large{ V_s }\) = cutting speed of standard steel for 20 minutes tool life

\(\large{ V_m }\) = cutting speed of material investigated for 20 minutes tool life


Tags: Equations for Material