Summary of density and vibration reduction function of titanium screws!

The editor summarizes ten points in total as follows:

1. Low density, high specific strength:

The density of titanium is 4.51g/cm3, which is higher than aluminum but lower than steel, copper and nickel.

2. Corrosion resistance:

Titanium is a very active metal, and its equilibrium potential is very low in media prone to thermodynamic corrosion. But in fact, titanium is very stable in many media, such as oxidizing, neutral and weakly reducing media.

3. Good heat resistance:

New titanium alloys can be used for long periods at temperatures of 600°C or higher.

4. 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 decreasing temperature, but the plasticity changes very little. It can maintain good ductility and toughness at -196-253℃ and avoid metal cold brittleness. It is an ideal material for cryogenic vessels, storage tanks and other equipment.

5. Powerful vibration reduction function:

Titanium has a longer decay time after mechanical and electrical vibrations compared to steel and copper.

6. Non-magnetic, non-toxic:

Titanium is a non-magnetic metal and will not be magnetized in a large magnetic field. It is non-toxic and has good compatibility with human tissue and blood, so it is chosen by the medical community.

7. The tensile strength is close to its bending strength:

The function of titanium indicates that its flexural strength ratio (tensile strength/flexural strength) is high, indicating that titanium has poor plastic deformation. Because the ratio of titanium's bending limit to elastic modulus is large, titanium's resilience is large.

8. Good heat transfer function:

Although the thermal conductivity of titanium is lower than that of carbon steel and copper, due to its excellent corrosion resistance, the wall thickness of titanium can be greatly reduced, and the heat transfer method of surface and steam condensation will reduce the heat group if If there is no scaling on the surface, the thermal resistance will be reduced, thereby greatly improving the heat transfer function of titanium.

9. Low elastic modulus:

The elastic modulus of titanium is 106.4 high standard a at room temperature, which is 57% of steel.

10. Inhalation function:

Titanium screws are a very chemically active metal that can react with many elements and compounds at high temperatures. Titanium gas absorption mainly refers to the reaction with carbon, hydrogen, nitrogen and oxygen at high temperatures.