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What are the properties of titanium in titanium coils?

Advantages of titanium coils:

1. Has excellent corrosion resistance in many media

2. Smooth surface without scale layer

3. Low density, high strength, therefore lightweight

Ten properties of titanium in titanium coils:

1. Low density, high specific strength

The density of titanium metal is 4.51g/cm3, which is higher than that of aluminum but lower than that of steel, copper, and nickel. Its strength is relatively high among metals.

Titanium coil tube

2. Corrosion resistance performance

Titanium is a very active metal. Its equilibrium potential is very low and its thermodynamic corrosion tendency in the medium is high. However, in reality, titanium is very stable in various media such as oxidizing, neutral, and weakly reducing, and has corrosion resistance. This is because titanium and oxygen have a strong cohesive force. In oxygen-containing air or media, a dense, strongly adhesive, and inert oxide film is formed on the surface of titanium to protect the titanium substrate from corrosion. Even due to mechanical wear, it can self recover or restore. This indicates that titanium is a metal with a strong tendency towards passivation, and titanium oxide films with a medium temperature below 315 ℃ have also maintained this characteristic.

In order to enhance the corrosion resistance of titanium, surface treatment techniques such as oxidation, electroplating, plasma spraying, ion nitriding, ion implantation, and laser treatment have been developed to enhance the protection of titanium oxide film and achieve the expected corrosion resistance performance. In order to meet the needs of metal materials such as sulfuric acid, hydrochloric acid, methylamine solution, high-temperature wet chlorine, and high-temperature chloride, a series of corrosion-resistant titanium alloys such as titanium molybdenum, titanium palladium, and titanium molybdenum nickel have been developed. Titanium castings are made of titanium 32 molybdenum alloy. Ti-0.3 molybdenum 0.8 nickel alloy or Ti-0.2 palladium alloy has achieved good efficiency when used locally in environments where crevice corrosion or pitting corrosion often occurs.

3. Good heat resistance performance

The new titanium alloy can be used for a long time at temperatures of 600 ℃ or higher.

4. Good low-temperature resistance performance

Low temperature titanium alloys represented by TA7 (Ti-5 Al-2.5Sn), TC 4 (Ti-6 Al-4V), and Ti-2.5Zr-1.5Mo exhibit an increase in strength with decreasing temperature, but little change in plasticity. Maintaining good ductility and toughness at low temperatures of -196-253 ℃, fortunately avoiding metal cold brittleness, it is an ideal material for low-temperature containers, storage tanks, and other equipment.

5. Good anti damping performance

After being subjected to mechanical and electrical vibrations, titanium metal has a longer self vibration attenuation time compared to steel and copper metals. The performance of titanium can be utilized as a vibrating film for tuning forks, academic crusher vibration components, and audio speakers.

6. Non magnetic and pollution-free

Titanium is a non-magnetic metal that is not magnetized in high magnetic fields. It is pollution-free and has good compatibility with human tissues and blood, and is used by the academic community.

7. The tensile strength is close to its yield strength

The performance of titanium indicates that its yield strength ratio (tensile strength/yield strength) is higher, indicating poor plastic deformation of titanium metal during the forming process. Due to the high ratio of yield strength to elastic modulus of titanium, the springback of titanium during the forming process increases.

8. Good heat exchange performance

Although the thermal conductivity of titanium metal is lower than that of carbon steel and copper, its excellent corrosion resistance can greatly reduce its wall thickness. The heat transfer between the surface and steam is droplet condensation, which reduces the heat group. If cooling is carried out on the surface, the heat group can also be reduced. Due to the absence of surface fouling, it can significantly increase the heat transfer performance of titanium.

9. Low elastic modulus

The elastic modulus of titanium is 106.4GMPa at room temperature, which is 57% of that of steel.

10. Inspiratory performance

Titanium is a highly reactive 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.

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