1. Properties & Characteristics
Material Classification
Produced by Neil Liggett
Properties & Characteristics

2. Properties & Characteristics
A historical perspective –
Materials are very important in the development of human civilisation. So much so, their names are associated with history, i.e. Stone age, Bronze age, Iron age, etc.

3. Properties & Characteristics
Properties refers to what?
Physical properties i.e. density, colour
Mechanical properties i.e. ductility, elasticity
Thermal properties i.e. thermal coefficient of expansion, conductivity
Chemical properties i.e. corrosion/oxidation resistance
Properties can be manipulated, through engineering processes

4. Properties & Characteristics
Each material possesses a structure, relevant properties, which dependent on the processing determines the performance.
Performance
Properties
Structure
Processing
It is these 3 elements we must explore within this module

5. Properties & Characteristics
Material Properties include –
Hardness – The ability to withstand abrasion & wear
Toughness – The ability to withstand impact
Ductility - Capable of being drawn out into wire
Elasticity - property of a material which allows it to be restored to its original shape after distortion.
Malleability - The ability of a material to be reshaped in all directions without cracking
Strength (T & C) – Ability to resist deformation subject to loads
Rigidity -Refers to inflexibility or resistance to change.

6. Properties & Characteristics
Manipulation of materials can offer a range of differing properties.