+86-13928348837
China Titanium CNC Machining: Quality Parts from Trusted Suppliers and Factory for Aerospace and Medical Applications
Titanium Alloy CNC Machining
Titanium is a high-performance metal with strength comparable to many steels but a density only about 60% that of steel. This unparalleled strength-to-weight ratio, combined with its outstanding corrosion resistance in harsh environments (such as seawater and bodily fluids), makes it the ideal choice for demanding applications. Our Instant Quoting Engine supports CNC machining for various titanium alloys.
Titanium Grade 2 CP Ti · Gr.2
Titanium Grade 2 is commercially pure titanium, offering the best formability, weldability, and excellent corrosion resistance among titanium alloys. While its strength is lower than Grade 5, its superb biocompatibility and corrosion resistance make it widely popular in chemical processing, marine, and medical (non-implant) fields.
🔩Typical Applications: Chemical processing equipment components, piping for desalination systems, medical device housings, non-load-bearing aerospace structures.
Titanium Grade 2 Typical Properties (Annealed)
| Property | Value | Notes |
| Yield Strength (MPa) | ≥ 275 | Good balance of ductility and strength |
| Tensile Strength (MPa) | ≥ 345 | |
| Elongation at Break (%) | ≥ 20 | Excellent ductility |
| Hardness (Vickers) | ~ 150 | |
| Density (g/cm³) | 4.51 | ~40% lighter than steel |
| Generalized values. Specific properties depend on heat treatment and specification. | ||
Titanium Grade 5 Ti-6Al-4V · Gr.5
Titanium Grade 5 (Ti-6Al-4V) is the most commonly used and representative alpha-beta titanium alloy, often called the "workhorse alloy." It provides an extremely high strength-to-weight ratio and excellent fatigue strength while maintaining good corrosion resistance, making it the primary choice for critical applications requiring both lightweight and high strength.
🔩Typical Applications: Aerospace structural components (airframe, landing gear), aircraft engine parts, high-performance automotive racing components, surgical implants (joints, bone plates), high-end sporting equipment.
Titanium Grade 5 Typical Properties (Solution Treated and Aged)
| Property | Value | Notes |
| Yield Strength (MPa) | ≥ 828 | Strength significantly exceeds Grade 2 |
| Tensile Strength (MPa) | ≥ 895 | |
| Elongation at Break (%) | ≥ 10 | Maintains good plasticity at ultra-high strength |
| Hardness (Rockwell C) | ~ 36 | |
| Density (g/cm³) | 4.43 | Similar to Grade 2 |
| Generalized values. Specific properties depend on heat treatment and specification. | ||
Frequently Asked Questions
What is the main difference between Titanium Grade 2 and Grade 5?
Titanium Grade 2 is commercially pure titanium, valued for its excellent formability, weldability, and biocompatibility, but with lower strength. Titanium Grade 5 (Ti-6Al-4V) is an alpha-beta alloy that offers significantly higher strength and fatigue resistance, making it suitable for more structurally demanding applications such as aerospace components and surgical implants.
Why is titanium preferred over steel for certain CNC machined parts?
Titanium offers a superior strength-to-weight ratio — it has strength comparable to many steels but is approximately 40% lighter. Additionally, titanium provides outstanding corrosion resistance in harsh environments including seawater and bodily fluids, making it the preferred choice in aerospace, marine, and medical industries where both weight savings and durability are critical.
Is Titanium Grade 5 suitable for surgical implants?
Yes. Titanium Grade 5 (Ti-6Al-4V) is widely used for surgical implants such as joint replacements and bone plates due to its high strength, low density, excellent fatigue resistance, and good biocompatibility. It is one of the most commonly used materials in orthopedic and dental implant applications.
What CNC machining challenges are associated with titanium alloys?
Titanium alloys are considered difficult-to-machine materials. They have low thermal conductivity, which causes heat to concentrate at the cutting edge, leading to rapid tool wear. They also tend to spring back and work-harden during machining. Proper cutting speeds, tool selection, and coolant strategies are essential to achieve accurate and high-quality titanium CNC parts.
Can titanium CNC parts be surface finished or coated?
Yes. Titanium CNC machined parts can undergo various surface treatments including anodizing (to enhance corrosion resistance and add color), passivation, polishing, bead blasting, and PVD coating. These finishes can improve aesthetics, wear resistance, and functional performance depending on the application requirements.
How do I choose between Titanium Grade 2 and Grade 5 for my project?
If your application prioritizes formability, weldability, and biocompatibility (such as chemical processing equipment or non-load-bearing medical housings), Titanium Grade 2 is the better choice. If your application demands high strength, excellent fatigue resistance, and lightweight performance (such as aerospace structures, engine parts, or load-bearing implants), Titanium Grade 5 is the recommended option.
Finishes and Post-Processing Options
The zinc alloy substrate is highly suitable for various surface treatments to enhance decoration, protection, or functionality:
Electroplating: Such as chrome, nickel, gold, or silver plating, providing a highly decorative appearance, excellent wear and corrosion resistance. This is the most common choice.
-
Passivation or Chromate Conversion Coating:
-
Powder Coating:
-
Painting:
-
Physical Vapor Deposition (PVD):
Design and Machining Considerations
-
Process Selection:
-
Design Considerations:
-
Material Selection:
Zamak 3 and 5 are suitable for the vast majority of general-purpose parts requiring good appearance and strength; ZA-8 is better for wear and bearing applications; for making rapid tooling, choose specialized alloys like Kirksite.
Ready to Start Your CNC Project?
Send us your drawings to receive professional manufacturing solutions.