I have learned that graphite is used in the handle of the racket and that's why someimes you find black marks on your hand after playing for a while.
Aluminium was commonly used for tennis rackets because of its light weight properties and resistance meeting standards. Although today Aluminium has become almost "obsolete" with the composite rackets, mostly made of carbon and graphite.
Tennis rackets used on tour, by the professional players
It is very lightweight and strong making it a more sensible option for tennis rackets.
It makes it strong
The idea of tennis was founded in the 12th century in which the players used hands instead of rackets. During the 16th century tennis players began using rackets.
The Romans made up the game tennis but they used wooden tennis rackets.
Table tennis rackets are used to hit the ball back and forth.
Long handled vellum battledores, short handled vellum battledores, plain wooden rackets, sandpaper covered rackets and cork-faced rackets.
Now, the metal used in "light weight" tennis rackets are titanium. Titanium (if you dunno) is a light weight metal which is really strong.
They get thrown away or given to a family member if wanted.