what would be the best metal to use for the body of an airplane??

Question: what would be the best metal to use for the body of an airplane??
- Keywords:
  airplane,
  material,
  metal
Asked by freddo to Sinead on 30 Jan 2015.
- Sinead Quirke answered on 30 Jan 2015:
  
  Modern jet airplanes are built of composite materials. You need light weight so that the airlines can use less fuel and this makes it cheaper to fly but the aircraft needs to be able to cope with the stresses and strains placed on it. So aircraft are now made with carbon fibre reinforced plastics, alluminium and titanium.

Question: what would be the best metal to use for the body of an airplane??