- Plastics have low density.
- They are corrosion-resistant.
- They are easy to manufacture and easy to make complex shapes.
- They can be used in electrical insulation.
- They have low thermal conductivity.
- They require low maintenance costs (Painting is not needed)
- They have high toughness and ductility.
- They are optics.
- Preferred glass because of its lightweight and toughness
- Aircraft windows are plastic
Advantages of plastics over the metals when used in civil engineering applications
