Metals and alloys with densities above 4.5 g/cm³ (e.g. copper, zinc and lead) are generally referred to as heavy metals.
This is a dull silver coloured alloy of iron, chromium and nickel. It is corrosion and acid resistant. It is very tough, and as a result it is hard to work. There are a variety of stainless steel grades. The most widespread grade is 18/8 (18% chrome, 8% nickel and the rest iron), also known as V2A steel. The material number helps us to determine the precise characteristics of the steel.
is a silvery-white material that is used for alloying. It results in very hard products such as steel for tank tracks and excavator shovels.