Tungsten is the strongest metal known to man. Its ultimate tensile strength is 1510 megapascals, and its melting point of 6,170 degrees Fahrenheit is so high that it's routinely used in incandescent lightbulbs. Tungsten also has a high density of 19.26 grams per cubic centimeter.
Tungsten resists both acids and alkalines and doesn't begin to oxidize until temperatures reach 750 degrees Fahrenheit. Because of its strength, alloying even a small amount of tungsten with steel greatly increases steel's hardness, elasticity and tensile strength. Tensile strength is a measure of how much stress a substance can tolerate before it fails while being pulled.