The most widely used titanium alloy - TC4

author: YITECH

2025-01-13

We provide high-quality and precise machining of titanium components for aerospace, medical and other industries.

Titanium and its alloys have a series of important characteristics such as high melting point, low density, high strength, corrosion resistance, good biocompatibility, superconductivity, shape memory and hydrogen storage, and are widely used in aviation, aerospace, shipping, nuclear power, medical, chemical, electronics, sports and leisure, construction and other fields, and are known as the "third metal", "air metal" and "ocean metal".

So do you know what is the most widely used titanium alloy in our current industrial production? That is our frequent cue to the old acquaintance TC4, it is the world's earliest development, the most widely used titanium alloy, its output accounts for about half of the world's semi-finished titanium alloy production. Therefore, today, Xiaozhi will take you to take stock of the "big star" in titanium alloy - TC4.

1. Development history of TC4

TC4 is a titanium alloy developed in the United States in the 1950s, its nominal composition is Ti-6al-4v ‌, that is, the main composition is titanium (Ti), aluminum (Al) and vanadium (V), of which the content of titanium is about 90%, the content of aluminum is 6%, the content of vanadium is 4%. ‌TC4 was also the first high temperature titanium alloy in the world at that time. Later, although TC4 could no longer be considered as a high temperature titanium alloy with the successful development of higher temperature titanium alloys, the successful development of TC4 laid a solid foundation for the research of high temperature titanium alloys in the United States.

China began to study titanium alloys in the 1950s, and the study of TC4 titanium alloys was also launched during this period.

2. TC4 performance and application

The main characteristics of TC4 titanium alloy are excellent comprehensive properties, good process characteristics and excellent superplasticity. It is suitable for forming with various pressure processing methods and welding in various ways. The main semi-finished forms of TC4 titanium alloy are bars, forgings, sheets, thick plates, profiles and wire materials. The alloy is mainly used in the annealed state, but can also be strengthened by solution aging.

TC4 titanium alloys are widely used. In aerospace, it is mainly used in the manufacture of various beams, spacers, rails, landing gear beams in aircraft structures, fans and compressor discs and blades of aircraft engines, shells of space rockets, pressure vessels and various types of fasteners. The alloy is also essential for civilian applications. For example, gas turbine blades in the electric power industry, ship thrusters in the shipbuilding industry, oil drilling platforms in Marine engineering, various corrosion resistant pumps in the chemical industry, artificial implants in medicine, various sports equipment and so on.

3. Improvement and future of TC4

In recent years, the application of TC4 titanium alloy in the aerospace field has been further expanded, especially in the development and application of new damage tolerance titanium alloy materials have made remarkable progress. Typical improvements are TC4 ELI and TC4-DT.

TC4 ELI low-gap titanium alloy is an improved version of TC4 titanium alloy, which is a very famous low-temperature titanium alloy. In the Apollo program, as the main low-temperature structural material, it is widely used in liquid hydrogen storage tanks and low-temperature catheters, showing better performance.

Tc4-dt alloy is developed on the basis of TC4 ELI titanium alloy. The alloy has the characteristics of moderate strength, high damage tolerance and long fatigue life. Compared with other medium strength titanium alloys, TC4-DT has quite high fracture toughness and anti-fatigue crack propagation ability under the condition of similar strength and plasticity level, and has become a key structural material for new aircraft in China.

Since the appearance of TC4 alloy, people have been studying it continuously. In recent years, due to the change of design concept, the research on it has set off a climax. At present, the influence of microstructure, texture, heat treatment, cross section size, loading direction, stress ratio, surface state and corrosion environment on fatigue properties of the alloy has been studied extensively, which makes it become a new applied material again.

DongGuan YiTai Electronic Technologies Co.,Ltd

DongGuan YiTai Electronic Technologies Co.,Ltd is a manufacturing service provider located in Dongguan, China.

YiTai specialized in CNC turning machining and sheet metal fabrication mainly. As a member of Hung Mou Group, we focus on the overseas marketing development. And based on our parent company’s manufacturing capability and resources, YiTai also expended machining services such as die casting, injection molding, aluminum profile extrusion, 3D printing, which are committed to providing customers with one-stop purchasing services and experience.

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