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High-Quality Titanium CNC Machining Services in China | Top Suppliers & Factory for Custom Parts
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.
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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.
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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
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What is the main difference between Titanium Grade 2 and Grade 5?
Titanium Grade 2 is commercially pure titanium, offering superior formability, weldability, and biocompatibility, but with lower strength. Grade 5 (Ti-6Al-4V) is an alpha-beta alloy with significantly higher strength (yield strength ≥ 828 MPa vs. ≥ 275 MPa), making it ideal for structural and load-bearing applications.
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Is titanium difficult to machine with CNC?
Titanium is considered a challenging material to machine due to its low thermal conductivity, tendency to work-harden, and chemical reactivity at high temperatures. However, with the correct tooling, cutting speeds, and coolant strategies, high-precision CNC machining of titanium alloys is achievable and routinely performed.
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Which titanium grade is best for medical implants?
Titanium Grade 5 (Ti-6Al-4V) is the most widely used grade for surgical implants such as orthopedic joints and bone plates, due to its excellent strength-to-weight ratio and biocompatibility. Grade 2 is also used in medical device housings for non-load-bearing applications where maximum corrosion resistance is needed.
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How does titanium's weight compare to steel?
Titanium has a density of approximately 4.43–4.51 g/cm³, which is about 40% lighter than steel (typically ~7.8 g/cm³). Despite this significant weight advantage, titanium alloys like Grade 5 can match or exceed the strength of many common steel grades.
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What surface finishes are available for CNC-machined titanium parts?
CNC-machined titanium parts can be finished in a variety of ways, including as-machined, bead blasting, anodizing (Type II or Type III), electropolishing, and passivation. The choice of finish depends on the application requirements such as aesthetics, corrosion resistance, and surface roughness.
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Can I get an instant quote for titanium CNC machining?
Yes. Our Instant Quoting Engine supports CNC machining for various titanium alloys including Grade 2 and Grade 5. Simply upload your CAD file, select your material and finish, and receive a real-time quote within seconds.
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.
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Passivation or Chromate Conversion Coating:
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Powder Coating:
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Painting:
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Physical Vapor Deposition (PVD):
Design and Machining Considerations
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Process Selection:
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Design Considerations:
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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.
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