Properties of lubricant

  Properties of lubricant

A good lubricant generally possesses the following characteristics:

 I. high boiling point (it is the temperature at which a liquid change to a gas (vapor) at normal atmospheric pressure) and low freezing point (temperature at which a liquid becomes a solid) in order to stay liquid within a wide range of temperature. [Note that, boiling point of water is 100°C and freezing point of water is 0°C] 

II. high viscosity index 

 III. thermal stability (it is the ability of a fluid to resist breaking down under heat stress) 

IV. corrosion prevention (refers to the solutions used in industries to prevent the depletion/consumption of the physical, mechanical and chemical properties of a material that is normally caused by corrosion) V. high resistance to oxidation