ASTM E2281

Full Name

ASTM E2281 – Standard Practice for Process Capability and Performance Measurement


This practice provides guidance for determining process capability and performance under several common scenarios of use including:

  • normal distribution based capability and performance indices such as Cp, Cpk, Pp, and Ppk;
  • process capability using attribute data for non-conforming units and non-conformities per unit type variables
  • additional methods in working with process capability or performance.


process capability; process performance; performance indices