Examine how the mechanical properties of metallic materials, both processed and non-processed, affect their behavior and suitability for practical applications, based on rigorously conducted tests and data from accredited sources. Justify the appropriateness of selected test methods within the context of realistic usage scenarios.

Perform a range of safe destructive and non-destructive tests on diverse metallic samples, encompassing processed and non-processed varieties.

Interpret the test outcomes alongside accredited data to elucidate the relationship between mechanical properties and material behavior. Propose an application that aligns with these insights.