This recommended practice establishes a procedure for checking the tempers of aluminum alloys through eddy current conductivity measurements and defines criteria for acceptance or rejection.
SAE ARP891A-2002 history
2006SAE ARP891B-2006 Determination of Aluminum Alloy Tempers Through Electrical Conductivity Measurement (Eddy Current)
2002SAE ARP891A-2002 Determination of Aluminum Alloy Tempers Through Electrical Conductivity Measurement (Eddy Current)
1976SAE ARP891A-1976 Determination of Aluminum Alloy Tempers Through Electrical Conductivity Measurements (Eddy Current)
1967SAE ARP891-1967 DETERMINATION OF ALUMINUM ALLOY TEMPERS THROUGH ELECTRICAL CONDUCTIVITY MEASUREMENT (EDDY CURRENT)