Description
Overview of TC4 (Ti-6Al-4V) Titanium Wire for Fasteners
TC4 titanium wire, equivalent to Ti-6Al-4V (Grade 5), is widely used in high-strength titanium fasteners for aerospace, marine, and automotive applications. With its excellent tensile strength fatigue resistance, and corrosion protection, TC4 is suitable for manufacturing bolts, screws, and nuts that must maintain structural integrity under dynamic or high-temperature service.Compared with commercially pure titanium grades, TC4 offers much higher strength while maintaining good machinability and oxidation resistance. lt is the preferred choice for fasteners in aircraft engines, airframes, racing vehicles, and deep-sea assemblies where both strength and weight reduction are essential.
Chemical Composition(wt,-%)
| Grade | Al | V | Zr | Mo | Si | Fe |
| TC4 | 5.50-6.75 | 3.50-4.50 | – | – | – | ≤0.30 |
| Grade | C | O | N | H | Ti | |
| TC4 | ≤0.08 | ≤0.15 | ≤0.05 | ≤0.012 | Bal | – |
Mechanical Properties
| Grade | Dia(mm) | Delivery Status | Tensile Strength
Rm , (MPa) |
Proof Strength
Rp0.2, (MPa) |
| TC4 | 3.0~20.0 | M | 930 | 860 |
| 3.0~12.7 | STA | 1140 | 1070 | |
| ＞12.7~20.0 | 1100 | 1035 | ||
| Grade | Elongation after Fracture
A, % |
Reduction of Area
Z, % |
Shear Strength
τ, MPa |
|
| TC4 | 10 | 25 | – | – |
| 10 | 20 | 670 | ||
Recommended Heat Treatment
| Grade | Heat Treatment Type | Heat Treatment Schedule |
| TC4 | Annealing | (700~850)°C, 30min~120min, air cool or furnace cool |
| Solution | (955±15)°C, 1h~2h, quench in running water, quenching delay time should be no more than 8s | |
| Aging | (540±8)°C, 4h~8h, air cool |
Advantages of TC4 (Ti-6A1-4V) Titanium Wire for Fasteners
1. High strength-to-Weight Ratio: Provides superior tensile strength for lightweight aerospace and high-performance fasteners.
2. Excellent Fatigue and Creep Resistance: Ensures fasteners maintain preload under cyclic and high-temperature conditions.
3. Corrosion and Oxidation Resistant: Performs well in seawater, salt spray, and high-temperature gas environments.
4. Good Machinability and Weldability: Allows precise thread forming, welding, and surface finishing for critical fastener applications.
5. Dimensional Stability: Retains strength and tightness even in vibration, pressure, or thermal cycling environments.
Applications of Tc4 (Ti-6Al-4V)Titanium Wire for Fasteners
1. Aerospace and Aviation: High-strength bolts, nuts, and screws used in aircraft structures,engines, and landing systems.
2. Automotive and Racing Vehicles: Lightweight fasteners for suspension, brake, and engine assemblies.
3. Marine and Subsea Systems: High-strength, corrosion-resistant fasteners for propellers,housings, and deep-sea equipment.
4. Energy and Petrochemical Industries: Components exposed to high temperature, pressure, and corrosive gases.
5. High-Performance Equipment: Used in sports, robotics, and precision machinery requiring strong yet lightweight fastening.
