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China Titanium CNC Machining Factory - High-Quality Suppliers for Custom Parts and Prototypes
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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Key Advantages: Best formability & weldability among titanium alloys · Excellent corrosion resistance · Superior biocompatibility
🔩 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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Key Advantages: Extremely high strength-to-weight ratio · Excellent fatigue strength · Good corrosion resistance · Widely used across aerospace, medical & motorsport
🔩 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 (FAQ)
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What is the main difference between Titanium Grade 2 and Grade 5 for CNC machining?
Titanium Grade 2 is commercially pure titanium, offering excellent formability, weldability, and biocompatibility, but with lower strength. Grade 5 (Ti-6Al-4V) is an alloyed titanium with significantly higher strength and fatigue resistance, making it suitable for structural and load-bearing applications. The choice depends on your specific strength, weight, and corrosion requirements.
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Is titanium difficult to machine with CNC processes?
Yes, titanium is generally considered challenging to machine due to its low thermal conductivity, high strength-to-weight ratio, and tendency to work-harden. It requires specialized tooling, optimized cutting parameters, and adequate cooling strategies. Our CNC machining services are specifically equipped to handle titanium alloys efficiently and accurately.
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Which titanium grade is recommended for medical implants?
Titanium Grade 5 (Ti-6Al-4V) is the most widely used alloy for load-bearing surgical implants such as joint replacements and bone plates, due to its high strength and proven biocompatibility. Titanium Grade 2 is preferred for non-implant medical device housings and components where formability and corrosion resistance are the primary concerns.
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How does titanium's weight compare to steel and aluminum?
Titanium has a density of approximately 4.43–4.51 g/cm³, which is about 40% lighter than steel (7.85 g/cm³) but slightly heavier than aluminum (2.70 g/cm³). However, titanium offers far superior strength compared to aluminum, making its strength-to-weight ratio one of the best among all structural metals.
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What surface finishes are available for CNC-machined titanium parts?
CNC-machined titanium parts can be finished with a variety of surface treatments, 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 protection, or biocompatibility.
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Can I get an instant quote for titanium CNC machining?
Yes. Our Instant Quoting Engine supports CNC machining for both Titanium Grade 2 and Grade 5. Simply upload your CAD file, select your material and finish preferences, and receive a competitive quote within seconds. Our team is also available to assist with design-for-manufacturability (DFM) recommendations.
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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