Which of the following methods is NOT typically used to identify the properties of aircraft metals?

The method that is not typically used to identify the properties of aircraft metals is the moisture test. This is because moisture testing primarily evaluates the presence of water or humidity in a material or environment, which is not directly related to the intrinsic properties of metals themselves.

In contrast, methods such as the bend test, magnetic test, and hardness test are standard practices in metallurgical evaluations. The bend test assesses ductility and flexibility, showing how a metal behaves under stress. The magnetic test is used to identify ferromagnetic materials, which can be important for assessing structural integrity and properties. The hardness test measures a metal's resistance to deformation, providing insight into its strength and wear characteristics. Thus, these three methods play a crucial role in determining the mechanical properties and suitability of metals for aerospace applications, whereas moisture testing does not provide relevant information regarding the metal's performance or characteristics.