Introduction to the Commonly Used Titanium Alloy TC4

TC4 titanium alloy：

Basic Characteristics
Type: TC4 is an (α+β) dual-phase titanium alloy with excellent overall performance.

Composition: Typically composed of Ti-6Al-4V, with titanium (Ti), aluminum (Al), and vanadium (V) as the primary elements.

Density: Approximately 4.4–4.5 g/cm³, making it a lightweight material.

Thermal Conductivity: ~7.955 W/m·K (relatively low, about 1/5 of iron and 1/10 of aluminum).

Elastic Modulus: ~110 GPa (about half that of steel), which may lead to deformation during machining.

Chemical Composition
Titanium (Ti): Balance

Aluminum (Al): 5.5–6.8%

Vanadium (V): 3.5–4.5%

Others: Trace amounts of iron (Fe), carbon (C), nitrogen (N), hydrogen (H), and oxygen (O).

Mechanical Properties
Tensile Strength (σb): ≥895 MPa (can exceed 900 MPa under certain conditions).

Yield Strength (σr0.2): ≥825 MPa.

Elongation (δ5): ≥10%.

Reduction of Area (ψ): ≥25%.

Hardness: ~320 HV.

Material Features
High Strength-to-Weight Ratio: Exceptional specific strength.

Excellent Corrosion Resistance: Performs well in seawater and most acid, alkali, and salt environments.

Low Density: Its lightweight nature makes it ideal for aerospace applications.

Good Toughness & Weldability: Enables broad industrial applications.

Applications
Aerospace: Used in engine fan & compressor disks, blades, aircraft structural beams, joints, and fasteners.

Biomedical: Widely used in artificial joints, bone implants due to its biocompatibility and mechanical properties.

Petrochemical Industry: Suitable for high-strength, corrosion-resistant components.

Shipbuilding: Used in hulls, propellers, enhancing corrosion resistance.

Automotive: Applied in engine parts, suspension systems, reducing weight and improving fuel efficiency.

Conclusion
TC4 titanium alloy plays a vital role in multiple industries due to its lightweight nature, high strength, corrosion resistance, and excellent mechanical properties.