Mechanical Properties of Materials Constraints Mechanical Properties Materials and their Properties

Constraints Stress exerted on a material by a force Tension = Stretch Compression = Crush Torsion = Twist Bending=bend Shearing= to tear/cut

Mechanical Properties How a material reacts when a constraint is applied to it

1. Hardness Material does not break even if the pressure is great Ex: Granite counters

2. Ductility Material stretches when pulled apart Ex: Copper wires

3. Elasticity Material goes back to original shape after constraint is applied Ex: Latex gloves

4. Malleability Material changes shape without breaking Ex: Gold jewellery

5. Corrosion Resistant Withstands degradation of the material by the environment Ex: Special coatings on metals