The diagrams show the effect of changing the carbon content on the mechanical properties of low carbon steels that have been annealed. It is seen (a) that the ultimate tensile strength of these alloys ...

They can be made harder by adding another element to the pure metal, so forming an alloy. This explains why an alloy often has more uses than the pure elements it is made from.

Researchers have developed a groundbreaking high-temperature copper alloy with exceptional thermal stability and mechanical strength. The metal could be used for engineering in extreme environments.

Electron microscope image of the aluminum alloy from the study. The light gray areas are sections of traditional crystals within the aluminum alloy, while the black dots are sections where NIST found ...