First, the density is small and the specific strength is high
The density of metallic titanium is 4.51g/cm3, higher than that of aluminum but lower than that of steel, copper and nickel, but the specific strength is the highest among metals.

Second, corrosion resistance
Titanium is a very active metal, its equilibrium potential is very low, and its thermodynamic corrosion tendency in medium is large.  But in fact titanium is very stable in many media, such as titanium is corrosion resistant in oxidizing, neutral and weakly reducing media.  This is because titanium and oxygen have great affinity. In air or oxygen-containing medium, a layer of dense, strong adhesion and inert oxide film is formed on the surface of titanium to protect the titanium matrix from corrosion.  Even if it is due to mechanical wear, it will heal or regenerate quickly.  This indicates that titanium is a metal with strong passivation tendency.  Titanium oxide film with medium temperature below 315℃ always keeps this characteristic.

Three. Good heat resistance
The new titanium alloy can be used for a long time at 600℃ or higher.
Four. Good low temperature resistance

The strength of low-temperature titanium alloys such as TA7 (Ti-5Al-2.5Sn), TC4 (Ti-6Al-4V) and Ti-2.5Zr-1.5Mo increases with the decrease of temperature, but the plasticity changes little.  It maintains good ductility and toughness at-196 ~ 253℃, avoids cold brittleness of metal, and is an ideal material for low-temperature containers, storage tanks and other equipment.

Five, strong anti-damping performance
After being subjected to mechanical vibration and electric vibration, titanium has the longest vibration attenuation time compared with steel and copper.  This property of titanium can be used as tuning fork, vibrating element of medical ultrasonic pulverizer and vibrating film of advanced sound loudspeaker.

Six, non-magnetic, non-toxic
Titanium is a nonmagnetic metal and will not be magnetized in a large magnetic field. It is nontoxic and has good compatibility with human tissues and blood, so it is adopted by the medical field.

Seven, the tensile strength is close to its yield strength
This property of titanium shows that its yield ratio (tensile strength/yield strength) is high, indicating the poor plastic deformation of metal titanium materials during forming.  Due to the large ratio of the yield limit to the elastic modulus of titanium, the resilience of titanium during forming is large.
Eight, good heat exchange performance
Although the thermal conductivity of metallic titanium is lower than that of carbon steel and copper, the wall thickness can be greatly reduced due to the excellent corrosion resistance of titanium, and the heat exchange mode between the surface and steam is droplet condensation, which reduces the heat group, and the thermal resistance can also be reduced without scaling on the surface, thus significantly improving the heat exchange performance of titanium.
Nine. Low Elastic Modulus
The elastic modulus of titanium is 106.4GMPa at room temperature, 57% of that of steel.

Ten. Aspiration Performance
Titanium is a metal with very active chemical properties, which can react with many elements and compounds at high temperature.  Titanium getter mainly refers to the reaction with carbon, hydrogen, nitrogen and oxygen at high temperature.