Any metal can be used; but the Hanukkah-menorah may be made out of any fireproof material, not necessarily metal.
The menorah in the Holy Temple was made of pure gold (Exodus ch.25). Our Hanukkah-menorahs, if made of metal, may be made with any type of metal. They may also be made of non-metal materials.
The metal most often used by people is iron.
The most common semi metal known is silicon. <(*_*)>
iron
the menorah can be any color and the candles too. most Jewish people have a silver menorah to make the mitzvah prettier for g-d.
Steel is most common.
The second most common metal is Iron (Fe) for information Aluminium (Al) is first.
They are are part of a typical Hanukkah celebration.
metal replacing metal
The most common liquid metal known to man is Mercury. It is also often referred to as quicksilver. It is heavy and silvery-white in color.
The common example is iron.
Yes =]