Known since the ancient times. The discovery by whom is unknown.

Uses for machine tools and for construction work.

Discovered by Axel Fredrik Cronstedt in 1751

Used in stainless steel and batteries.

Known since the ancient times

Used in the penny and in electrical industry.

Known since the ancient times.

Used to make coins and kettles in the olden days.

Known since the ancient times.

Used for conducting the heat and electricity of all metals.