2007-07-22 04:32:16 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The key head and the key blade are each manufactured from an alloy that includes at least about 70% by weight copper, where the alloy includes less than about 6.0% by weight nickel, and is substantially free of lead.
2007-07-22 05:08:11 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Generally, quality keys are made out of brass, because it won't rust. Cheap keys are made out of steel. Some keys are plated with a silver-colored metal, but the more they are used, the more this plating wears away to reveal the brass underneath.
2007-07-22 04:36:16 · answer #2 · answered by TitoBob 7 · 0⤊ 0⤋
it can be of any metal.
in olden times it wz usually of iron and copper.and for the treasure keys were of gold cz of lusture and not rusting or anything like it.
and now,it is of brass,steel,copper and silver plated on different alloys.
hope tht helps
2007-07-22 04:41:17 · answer #3 · answered by RaZoR 2 · 0⤊ 0⤋
Brass or Invar.
2007-07-22 04:54:24 · answer #4 · answered by ag_iitkgp 7 · 0⤊ 1⤋