What is the hardest metal on Earth?

Maraging steel is the hardest metal on Earth. This steel is an alloy of nickel, cobalt and molybdenum. Most of the hardest metals are not naturally occurring; instead, they are man-made alloys.

Maraging steel is very difficult to deform, and even once it is fractured, it takes a great deal more force to break it fully. It is also strong against pulling forces. Most of the strongest metal alloys include nickel, carbon and chromium in their composition. Nickel-based super alloys often include these ingredients and are strong even at extreme temperatures, making them a perfect option for jet engines and turbine blades.