+86-13928348837
China Titanium CNC Machining: Reliable Factory Suppliers for High-Quality Custom Parts and Rapid Prototyping
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 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) Commercially Pure
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.
Best Formability
Excellent Weldability
Superior Corrosion Resistance
Biocompatible
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) Workhorse Alloy
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.
Ultra-High Strength
Excellent Fatigue Strength
Lightweight Design
Surgical Implant Grade
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
Q
What is the main difference between Titanium Grade 2 and Grade 5?
Titanium Grade 2 is commercially pure titanium, prized for its excellent formability, weldability, and superior corrosion resistance. Grade 5 (Ti-6Al-4V) is an alpha-beta alloy that offers significantly higher strength and fatigue resistance, making it suitable for high-stress structural and implant applications. Grade 5's yield strength (≥ 828 MPa) is roughly three times that of Grade 2 (≥ 275 MPa).
Q
Is titanium difficult to CNC machine compared to stainless steel?
Yes, titanium is generally more challenging to machine than most stainless steels. Its low thermal conductivity causes heat to concentrate at the cutting edge, and its tendency to work-harden demands sharp tooling, slower cutting speeds, and appropriate coolant strategies. However, with proper toolpath planning and tooling selection, high-quality titanium parts can be produced consistently.
Q
Which titanium grade is preferred for medical implants?
Titanium Grade 5 (Ti-6Al-4V) is the most widely used alloy for load-bearing surgical implants such as hip joints, knee replacements, and bone plates, due to its high strength and proven biocompatibility. Titanium Grade 2 is also biocompatible and is used for non-load-bearing medical device housings and instruments.
Q
What surface finishes are available for CNC-machined titanium parts?
CNC-machined titanium parts can be finished in several ways, including as-machined, bead blasting, anodizing (Type II or Type III), passivation, polishing, and electropolishing. The choice of finish depends on the application requirements — for example, anodizing improves surface hardness and provides color-coding for medical or aerospace components.
Q
Why is titanium commonly used in aerospace applications?
Titanium's exceptional strength-to-weight ratio is the primary reason for its aerospace adoption. At roughly 40% lighter than steel with comparable or superior strength, titanium enables significant weight savings in airframes, engine components, and landing gear — directly improving fuel efficiency and payload capacity. Its resistance to fatigue and high-temperature performance further solidify its role in aerospace engineering.
Q
How do I choose between Titanium Grade 2 and Grade 5 for my project?
Consider your application's primary requirements. If your part demands maximum corrosion resistance, formability, and weldability in a non-structural role — such as chemical processing or marine environments — Grade 2 is the optimal choice. If your application requires high structural strength, fatigue resistance, and lightweight performance — such as aerospace frames, engine parts, or surgical implants — Grade 5 (Ti-6Al-4V) is the preferred option. Our engineering team can help you select the right grade based on your load, environment, and cost requirements.
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.