Titanium is a new type of metal. Titanium is known for its high strength-to-weight ratio. It is a strong metal with low density, strong ductility (especially in an oxygen-free environment), lustrous, and metallic white in color.

The properties of titanium are related to the content of impurities such as carbon, nitrogen, hydrogen, and oxygen. The purest titanium iodide has an impurity content of no more than 0.1%, but its strength is low and its plasticity is high. The properties of 99.5% industrial pure titanium are: density ρ = 4.5g/cm3, melting point 1725℃, thermal conductivity λ = 15.24W/(m.K), tensile strength σb = 539MPa, elongation δ = 25%, section reduction ψ = 25%, elastic modulus E = 1.078×105MPa, hardness HB195.

Titanium is not as hard as some grades of heat-treated steel, is non-magnetic, and is a poor conductor of heat and electricity. Precautions are required for processing, as the material may itch if sharp tools and proper cooling methods are not used. Like titanium structures made from steel, titanium structures have a fatigue limit that guarantees service life in certain applications. Titanium alloys are less stiff than many other structural materials, such as aluminum alloys and carbon fiber.