The name is derived from the Greek word ‘chromos’ meaning ‘colour’. Chromium compounds often have beautiful bright colours, ruby being one of them.
The metal gets used to put a shiny coating around other substances and to increase the hardness of steel.
Chromium makes steel easier to cut and at the same time more resistant to corrosion and erosion.
The strongest steel contains 4% carbon, nickel and chromium. Chromium makes it tougher, harder and easier to flatten.