TC21 Titanium Alloy Screws

TC21 titanium alloy screws are made from a high-performance α+β titanium alloy with a composition of Ti-6Al-3Mo-2Zr-2Sn-2Nb-1.5Cr-0.15Si. This advanced titanium alloy is known for its exceptional strength, high toughness, and excellent fatigue resistance, making it an ideal material for aerospace, automotive, marine, and high-stress industrial applications. Compared to TC4 (Ti-6Al-4V), TC21 offers higher strength, better toughness, and improved fatigue life, making it a preferred choice for demanding engineering environments.

Classification:

Product Series

E-mail:

monfils.chen@mtwkj.com

Contact

Message

introduce

Key Features:

✅ High Strength & Toughness – TC21 has a higher tensile and yield strength than TC4 (Grade 5), making it suitable for high-load and high-fatigue applications.
✅ Excellent Fatigue Resistance – Performs well under repeated stress cycles, making it ideal for structural fasteners and high-performance mechanical components.
✅ Superior Corrosion & Oxidation Resistance – Withstands marine, chemical, and aerospace environments, resisting oxidation at high temperatures.
✅ Good High-Temperature Performance – Maintains mechanical properties at temperatures up to 450–500°C (842–932°F), making it suitable for aerospace and engine applications.
✅ Lightweight with High Strength-to-Weight Ratio – 40% lighter than steel, reducing structural weight while maintaining excellent durability.
✅ Good Weldability & Machinability – Suitable for various manufacturing techniques, including forging, machining, and welding.

Common Applications:

🚀 Aerospace Industry – Used in aircraft structural components, engine parts, turbine blades, and fasteners that require high strength and fatigue resistance.
🏎️ Automotive & Motorsports – Applied in racing car components, engine bolts, and suspension systems where lightweight and high strength are essential.
🌊 Marine & Offshore Engineering – Ideal for shipbuilding, offshore platforms, and underwater structures exposed to seawater.
🏗️ Industrial & Chemical Processing – Used in high-stress mechanical structures, pressure vessels, and reactors that require superior corrosion and oxidation resistance.
🔩 Military & Defense – Used in high-strength fasteners, missile components, and defense systems due to its high durability and impact resistance.

Mechanical Properties (Typical):
- Tensile Strength: 1100–1250 MPa
- Yield Strength: ≥ 1000 MPa
- Elongation: ≥ 8%
- Density: 4.5 g/cm³
- Hardness: ~37 HRC
- Elastic Modulus: 112 GPa
- Operating Temperature: Up to 500°C (932°F)
Specifications & Standards:
- Material: TC21 (Ti-6Al-3Mo-2Zr-2Sn-2Nb-1.5Cr-0.15Si)
- Diameter Range: M2 to M30 (customized sizes available)
- Standards: GB/T 3621, AMS 4915, ASTM B265
Conclusion:

TC21 titanium alloy screws offer superior strength, excellent fatigue resistance, and outstanding high-temperature performance, making them the perfect choice for aerospace, automotive, marine, and high-performance industrial applications. Their lightweight yet durable nature ensures optimal performance in extreme environments, making them a preferred fastener solution for cutting-edge engineering projects.