Low-strength Titanium Alloy Sheet

Industrial pure titanium, due to its content of a relatively high amount of oxygen, nitrogen, carbon, and various other impurity elements, is essentially a low-alloy titanium alloy. Its strength is not high, comparable to ordinary carbon steel, but it has good plasticity and is easy to process and form. Currently, the industrial pure titanium we produce includes four grades: Gr.1, Gr.2, Gr.3, and Gr.4.Titanium and titanium alloys hold a very important position among metallic materials, closely related to their excellent properties. The outstanding properties of titanium alloys include:
(1) High Strength
The density of titanium alloys is generally around 4.51 g/cm³, only about 60% that of steel. Some high-strength titanium alloys exceed the strength of many alloy structural steels. Therefore, the specific strength (strength/density) of titanium alloys is much greater than that of other metallic structural materials, allowing the production of components that are high in strength, rigid, and lightweight, such as aircraft engine parts, airframes, skins, fasteners, and landing gears.
(2) High Thermal Strength
The operating temperature of titanium alloys is several hundred degrees Celsius higher than that of aluminum alloys, reaching up to 500°C, while aluminum alloys remain below 200°C. Titanium alloys can maintain the required strength at moderate temperatures and can work long-term at 450–500°C. They retain high specific strength within the range of 150–500°C, whereas aluminum alloys show a significant drop in specific strength at 150°C.
(3) Excellent Corrosion Resistance
Titanium alloys exhibit far superior corrosion resistance compared to stainless steel when used in humid atmospheres and seawater. They have strong resistance to pitting, acid corrosion, and stress corrosion. They also show excellent corrosion resistance to alkalis, chlorides, chlorinated organic substances, nitric acid, and sulfuric acid.
(4) Good Low-Temperature Performance
Titanium alloys maintain their mechanical properties at low and extremely low temperatures. With good low-temperature performance and very low interstitial element content, titanium alloys can retain a certain degree of plasticity at low temperatures. Therefore, titanium alloys are also important materials for low-temperature structural applications.

Coastal power plant condensers are important large-scale equipment, with seawater as the cooling medium. Traditionally, power plant condensers are made of steel and copper alloys, but these materials have poor resistance to seawater corrosion and a short service life. Corrosion often causes condenser leaks, forcing power plants to shut down and resulting in significant economic losses. Under the influence of seawater, especially polluted seawater, common copper alloy condensers are prone to pitting, perforation, stress corrosion, and fatigue corrosion, leading to equipment leakage and power plant shutdowns. The advantages of using titanium condensers in coastal power plants are:
1. They can utilize seawater on-site, eliminating the need for freshwater as a cooling medium;
2. They eliminate the need for desalination and cathodic protection systems;
3. They extend the condenser's lifespan. The service life of titanium condensers is 4-6 times longer than that of copper alloy condensers, resulting in significant economic benefits;
4. They increase the safety factor of the power plant, reduce downtime for maintenance;
They reduce the wall thickness of condenser tubes, enhance process parameters, and improve the condenser's heat exchange efficiency.

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