Determination of mechanical properties of material that reveals its elastic and inelastic behaviour when force is applied, thereby indicating its suitability for mechanical applications Properties of a metal or alloy that are relatively insensitive to structure and can be measured without the application of force; for example, density, electrical conductivity, coefficient of thermal expansion, magnetic permeability, and lattice parameter. Does not include chemical reactivity.

Mechanical testing done in AL as below:

Tensile test means, a method of determining the behaviour of materials subjected to uniaxial loading, which tends to stretch the metal. A longitudinal specimen of known length and diameter is gripped at both ends and stretched at a slow, controlled rate until rupture occurs.

UTM machine can be use for the following test

• Bend test
• Rebend test
• Proof load test
• Compression test
• Flaring test

UTM machine can give the value of

• Yield stress
• Ultimate tensile stress
• % elongation
• Reduction percentage area (in %)

UTM machine provide graph of

• Stress vs strain
• Load vs displacement
• Stress vs displacement

Hardness test

Hardness means a measure of the resistance of a material to surface indentation or abrasion; may be thought of as a function of the stress required to produce some specified type of surface deformation.