An alloy is basically a solid mixture of two or more different elements.
There are magnesium alloys, titanium alloys, nickel alloys, zinc
alloys and copper alloys. For example, brass is an alloy of copper and
Bronze and stainless steel are some common and good examples of alloy.they are popular
Pure iron is not good for building things becasue it is too soft and stretches easily. It also corrodes easily. If a samll amount of carbon is added to iron, mild steel is produced which is hard and strong, so it can be used for building things.
If nickel and chromium are mixed with iron, stainless steel is produced which is hard and rustproofs, os can be used in areas that are exposed to air and water, e.g. Cutlery.