Alloys Explained: When Metals Team Up

An alloy is a mixture of metals (or metals with nonmetals) designed to improve strength or durability.
Bronze, the first major alloy, combined copper and tin, sparking the Bronze Age.
Steel is an alloy of iron and carbon, forming the backbone of modern industry.
Alloys can be harder, lighter, or more resistant to rust than their pure-metal parents.
Brass, made from copper and zinc, is prized for its golden color and musical resonance.
Stainless steel resists corrosion thanks to chromium, which creates a protective oxide layer.
Alloys are everywhere—from aircraft aluminum blends to the coins in your pocket.
Some alloys are amorphous “metallic glasses”, combining strength with unusual flexibility.
By tweaking composition, alloys can be tailored for magnets, superconductor wires, or dental fillings.
From ancient swords to spacecraft, alloys show how teaming up metals changes history.