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China Titanium CNC Machining: High-Quality Custom Parts from Leading Suppliers and Factory
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.
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.
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 difference between Titanium Grade 2 and Grade 5 for CNC machining?
Titanium Grade 2 is commercially pure titanium, valued for its excellent formability, weldability, and corrosion resistance, making it ideal for chemical and medical applications. Grade 5 (Ti-6Al-4V) is an alpha-beta alloy with significantly higher strength and fatigue resistance, preferred for aerospace, automotive, and surgical implant applications where both lightweight and high strength are critical.
Q
Why is titanium considered difficult to machine compared to other metals?
Titanium's low thermal conductivity causes heat to concentrate at the cutting edge rather than dissipating through the chip. It also has a tendency to spring back elastically and can react chemically with cutting tools at elevated temperatures. These factors lead to rapid tool wear and require specialized tooling, slower cutting speeds, and proper coolant strategies during CNC machining.
Q
Is Titanium Grade 5 (Ti-6Al-4V) suitable for medical implants?
Yes. Titanium Grade 5 (Ti-6Al-4V) is widely used for surgical implants such as joint replacements and bone plates due to its excellent biocompatibility, high strength-to-weight ratio, and corrosion resistance in bodily fluids. For implant-grade applications, the ELI (Extra Low Interstitial) variant — Ti-6Al-4V ELI — is often specified for enhanced fracture toughness and reduced risk of adverse biological response.
Q
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 (for color and surface protection), passivation, polishing, and electropolishing. The choice depends on the functional requirements — for example, medical components often require electropolishing or passivation, while aerospace parts may need specific surface roughness values for fatigue performance.
Q
How does titanium's corrosion resistance compare to stainless steel?
Titanium generally offers superior corrosion resistance compared to most stainless steels, particularly in chloride-rich environments such as seawater and certain chemical processing media where stainless steel may suffer from pitting or crevice corrosion. Titanium forms a stable, self-healing oxide layer that protects it across a wide range of harsh conditions, making it the preferred choice for marine, chemical, and biomedical applications.
Q
Can I get an instant quote for titanium CNC machining parts?
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 specifications, and receive a competitive quote instantly. Our engineering team is also available to review your design for manufacturability and help optimize your parts for cost-effective titanium machining.
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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