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China Titanium CNC Machining Factory: Reliable Suppliers for Custom High-Quality Titanium Parts
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, prized for its excellent formability, weldability, and biocompatibility. Grade 5 (Ti-6Al-4V) is an alloyed titanium with significantly higher yield and tensile strength, making it better suited for structural, aerospace, and implant applications where both strength and low weight are critical.
Is titanium difficult to machine with CNC processes?
Titanium alloys can be challenging to machine due to their low thermal conductivity and tendency to work-harden. However, with proper tooling, cutting parameters, and coolant strategies, high-quality CNC-machined titanium parts can be produced efficiently. Our quoting engine is optimized to handle titanium machining requirements.
Which titanium grade is preferred for medical implants?
Titanium Grade 5 (Ti-6Al-4V) is the most widely used grade for load-bearing surgical implants such as hip joints and bone plates, due to its high strength and biocompatibility. Grade 2 is preferred for non-load-bearing medical device housings and components where superior corrosion resistance is the primary requirement.
How does titanium's weight compare to steel?
Titanium has a density of approximately 4.43–4.51 g/cm³, which is roughly 40% lighter than steel (density ~7.85 g/cm³). Despite this significant weight reduction, titanium alloys like Grade 5 can match or exceed the strength of many common steels, making them ideal for weight-sensitive applications.
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), passivation, and polishing. The choice of finish depends on the application's functional, aesthetic, and corrosion-resistance requirements.
Can titanium alloys be used in corrosive or marine environments?
Yes. Both Grade 2 and Grade 5 titanium exhibit outstanding corrosion resistance in harsh environments including seawater, chlorine-rich media, and many acidic conditions. Grade 2 is especially popular for marine piping, desalination systems, and chemical processing equipment due to its exceptional resistance to corrosive attack.
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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