Ten characteristics and functions of titanium

1. The density of titanium is small and the specific strength is high: the density of titanium is 4.51, which is higher than aluminum and lower than steel, only 1/2 of steel. The strength of titanium is at the top of metal.

2. Titanium has strong corrosion resistance: Titanium is a very active metal with a low equilibrium potential and a high degree of thermodynamic corrosion in the medium. In practice, however, titanium is very stable in many media, such as titanium, which is resistant to corrosion in media such as oxidizing, neutral, and weakly reducing.

3. Titanium has good heat resistance: Titanium alloy can be used for a long time at 600 ° C or higher.

4. Titanium has good low temperature resistance: Titanium alloys such as TA7 and TC4 are low-temperature titanium alloys whose strength increases with the decrease of temperature, but the plasticity changes are not large. It maintains good ductility and toughness at low temperature of -196-253 °C, avoids cold and brittleness of metal, and is an ideal material for equipment such as cryogenic vessels and tanks.

5. Titanium has strong anti-damping performance: After being subjected to mechanical vibration and electrical vibration, titanium metal has the longest vibration decay time compared with steel and copper metal.

6. Titanium has non-magnetic, non-toxic properties: Titanium is a non-magnetic metal, it will not be magnetized in a large magnetic field, non-toxic and has good compatibility with human tissues and blood, so it has been adopted by the medical community.

7. The tensile strength of titanium is close to its yield strength: this property of titanium indicates that its yield ratio (tensile strength/yield strength) is high, indicating that the metal titanium material has poor plastic deformation during forming. Since the ratio of the yield limit of titanium to the modulus of elasticity is large, the resilience of titanium during molding is large.

8. The heat transfer performance of titanium is good: although the thermal conductivity of 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 between surface and steam is droplet condensation. The heat group is reduced, the surface is not scaled, the heat resistance is also reduced, and the heat exchange performance of titanium is remarkably improved.

9. Titanium has a low modulus of elasticity: the modulus of elasticity of titanium is 106.4 GMPa at room temperature and 57% of steel.

10. Titanium has a gettering property: Titanium is a very chemically active metal that reacts with many elements and compounds at high temperatures. Titanium inhalation mainly refers to the reaction with carbon, hydrogen, nitrogen and oxygen at high temperature.