Conductivity/hardness testing for heat damage to al alloys

[Nagler]

Re heat damage to al alloy structure such as caused by a leaking turbo charger exhaust or APU. Can anyone direct me to procedures for conductivity testing with and without hardness testing backup. Considering the likelihood of such damage occuring, it is surprising that such info is not readily available. I know that Boeing/MDC have it but it is proprietary.
Many thanks in anticipation,
Nagler

 

[swall]

AMS 2658, which is an aerospace SAE spec, covers this.