Classification of titanium alloys by use in shipbuilding, metallurgy and civil applications

Titanium alloys can be divided into structural titanium alloys, heat-resistant titanium alloys, corrosion-resistant alloys, low-temperature alloys, and special functional alloys (memory alloys, superconducting alloys, hydrogen storage alloys), etc. according to their uses.

1. Structural titanium alloy

Low-strength titanium alloys are mainly used for corrosion-resistant titanium alloys. Other titanium alloys are used for structural parts called structural alloys. In practical applications, structural titanium alloys are divided into normal-strength titanium alloys, medium-strength titanium alloys, and high-strength titanium alloys alloy. Ordinary-strength titanium alloy: Because of its good processing and formability and weldability, it is mostly used to manufacture various aviation sheet parts, hydraulic pipes, bicycles and other civilian products. Medium-strength titanium alloy: The typical alloy is TC4, which is mostly used in high-tech industries such as aerospace and rocket launches. High-strength titanium alloy: generally used to replace the high-degree structural steel commonly used in aircraft structures.

2. Heat-resistant titanium alloy

Refers to a titanium alloy suitable for long-term work at higher temperatures. It has a high instantaneous enduring strength in the entire working temperature range, good plasticity at room temperature, good creep resistance and good thermal stability, and fatigue resistance at room temperature and high temperature. It is mostly used to manufacture the disks, blades, air intake receivers and structural parts of aircraft parts.

3. Corrosion-resistant titanium alloy

Refers to suitable for the application of titanium alloys in strongly corrosive media. Corrosion-resistant titanium alloys are mainly low-strength alloys, such as titanium-molybdenum, titanium targets, titanium-molybdenum targets, titanium-nickel, titanium-tantalum and other alloys.

4. Low-temperature titanium alloy

It refers to α and α-β titanium alloys suitable for low-temperature use. The strength of this type of titanium alloy increases with the decrease of temperature, and the toughness rarely decreases with the decrease of temperature. It can be used as low-temperature structural parts. It has been widely used in shipbuilding, chemical industry, metallurgy, medical treatment, etc.

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