How do we calculate the strength of aluminum alloy?

The strength of aluminum alloy is calculated through a series of mechanical tests, primarily the tensile test. In this test, a sample of the alloy is subjected to a gradually increasing tensile force until it fractures. The yield strength is noted at the point where the alloy begins to deform plastically, and the ultimate tensile strength (UTS) is recorded at the point of fracture. The strength is expressed in units of stress (e.g., MPa or psi). Additionally, the hardness of the alloy can be measured using tests like the Brinell or Rockwell hardness test. These values, along with other properties like elongation and reduction of area, provide a comprehensive understanding of the alloy's strength and ductility.