This Aerospace Standard establishes a uniform procedure for calculation of electron vacancy numbers in superalloys. It is intended for use by suppliers of raw materials and parts, typically castings, for which control of electronic vacancy number is required by the raw material specification.
SAE AS5491B-2002 history
2019SAE AS5491D-2019 Calculation of Electron Vacancy Number in Superalloys
2013SAE AS5491C-2013 Calculation of Electron Vacancy Number in Superalloys
2007SAE AS5491C-2007 Calculation of Electron Vacancy Number in Superalloys
2002SAE AS5491B-2002 Calculation of Electron Vacancy Number in Superalloys
2001SAE AS5491A-2001 Calculation of Electron Vacancy Number in Superalloys
2000SAE AS5491-2000 Calculation of Electron Vacancy Number in Superalloys