MIL-STD-1537 Electrical Conductivity Test For Verification Of Heat Treatment Of Aluminum Alloys, Eddy Current MethodThis standard contains procedures for verifying aluminum alloy heat treatment by means of eddy current techniques, which measure electrical conductivity. Aluminum alloy heat treatment can be verified when electrical conductivity measurements are used in conjunction with hardness measurements.

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MIL-STD-1537C

CONTENTS (Continued)

Paragraph                                                                                                                                Page

4.4.4          CIad Specimens. --------------------------------------------------------------------------------------- 8

4.4.5          AIcIad specimens.-------------------------------------------------------------------------------------- 8

4.5             PersonneI quaIification.------------------------------------------------------------------------------10

4.5.1          Direct reading instruments.-------------------------------------------------------------------------10

4.5.2          Indirect reading instruments.-----------------------------------------------------------------------10

5              DETAIL REQUIREMENTS································································10

5.1             Procedure. ----------------------------------------------------------------------------------------------10

5.1.1          Hardness tests.----------------------------------------------------------------------------------------10

5.1.2          Conductivity tests. ------------------------------------------------------------------------------------10

5.1.2.1       AcceptabIe mechanicaI properties.---------------------------------------------------------------10

5.1.3          Correction factors for conductivity readings on round stock. ------------------------------10

5.1.4          Lift-off correction factors.----------------------------------------------------------------------------11

5.1.5          Operating precautions. ------------------------------------------------------------------------------11

5.2             Conductivity requirements. -------------------------------------------------------------------------11

6              NOTES·························································································11

6.1             Intended use.------------------------------------------------------------------------------------------11

6.2             Issue of DoDISS.--------------------------------------------------------------------------------------12

6.3             Subject term (key word) Iistings. ------------------------------------------------------------------12

6.4             Report of resuIts.-------------------------------------------------------------------------------------12

6.5             Changes from previous issues.--------------------------------------------------------------------12

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