TC4 Titanium Alloy: The High-Performance Material

Titanium alloys are widely used in fields such as aerospace and medical devices. Among the numerous titanium alloys, TC4 titanium alloy and Grade 5 titanium alloy are often mentioned. They are actually the same type of titanium alloy material.

TC4 titanium and Grade 5 titanium are essentially different naming conventions for the same titanium alloy, Ti-6AL-4V. TC4 is the designation for a titanium alloy under the Chinese National Standard (GB), while Grade 5 is the designation for the same titanium alloy under the American Society for Testing and Materials (ASTM). Both have essentially identical chemical compositions and properties, belonging to the titanium-aluminum-vanadium alloy category.

Chemical Composition:

Titanium (Ti): Balance

Aluminum (Al): Approximately 6.0%

Vanadium (V): Approximately 4.0%

Other Elements: Trace amounts of iron (Fe), oxygen (O), and other impurities

Due to the high consistency in chemical composition and structure, TC4 titanium can be directly used in engineering applications as ASTM Grade 5 titanium.

The grades Titanium Grade 1 to Grade 12 are based on the American ASTM standards, and their corresponding Chinese grades are as follows:

Table 1. Titanium Alloy Grade Comparison Table

Whether TC4 or Grade 5, their composition is Ti-6Al-4V, which is a high-performance material with high strength and excellent corrosion resistance. Ti-6Al-4V is also the most maturely applied titanium alloy material.

The main chemical components of TC4 titanium include Titanium (Ti), Aluminum (Al), Vanadium (V), and Iron (Fe). Among them, the titanium content is over 90%, aluminum content is about 6%, vanadium content is 4%, and iron content is low, generally not exceeding 0.3%. This specific formulation gives TC4 titanium alloy excellent mechanical properties and corrosion resistance.

In terms of mechanical properties, Ti-6Al-4V titanium alloy performs exceptionally well. Its tensile strength can reach over 1000 MPa, with yield strength around 900 MPa, and it possesses high hardness and elastic modulus.

TC4 titanium also exhibits excellent corrosion resistance. Its corrosion resistance is mainly reflected in its ability to withstand corrosive media such as oxidation, nitration, and chlorination. In corrosive environments like seawater or chemical industries, TC4 titanium alloy can maintain surface smoothness and mechanical properties for a long time, ensuring a longer service life.

We are a leading manufacturer and exporter specializing in Titanium and Titanium Alloy products. Our company is dedicated to providing a comprehensive range of high-quality titanium solutions for demanding global industries such as Aerospace, Chemical Processing, Medical, Marine Engineering, Power Generation, and Sports Equipment.

Our core export portfolio encompasses the full spectrum of wrought titanium products, including:

Titanium Tubes & Pipes: From precision Thin-Walled Titanium Tubes for heat exchangers to robust Thick-Walled Titanium Pipes for high-pressure applications.

Titanium Plates & Sheets: Supplied as Titanium Plates for heavy-duty construction and Titanium Sheets / Titanium Foils for precise manufacturing.

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We expertly process all common grades to meet diverse operational requirements, including:

Commercially Pure Titanium: Gr1, Gr2

Titanium Alloys: Gr5 (Ti-6Al-4V), Gr7, Gr9 (Ti-3Al-2.5V), Gr12

Our production and quality assurance strictly adhere to international standards such as ASTM B265, ASTM B337, ASTM B338, ASTM B348, ASME SB-363, and AMS 4902, ensuring superior performance, excellent corrosion resistance, and high strength-to-weight ratio in every product.

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