GRADE 23 Ti-6Al-4V ELI
Titanium & Titanium Alloy Grades
GRADE 23 Ti-6Al-4V ELI
Titanium Grade 23, also known as Ti-6Al-4V ELI (Extra Low Interstitial), is a premium titanium alloy recognized for its exceptional biocompatibility, high strength, and excellent corrosion resistance. It’s a variant of Titanium Grade 5 (Ti-6Al-4V) with enhanced properties, making it ideal for critical applications, especially in the medical and aerospace industries.
Common Grade 4 Products
Titanium Bar
Titanium Sheet
Key characteristics and properties of Titanium Grade 23:
Composition
The typical chemical composition of Titanium Grade 23 is as follows:
- Titanium (Ti): Balance (~89-90%)
- Aluminum (Al): 6%
- Vanadium (V): 4%
- Other Elements: Extra low levels of interstitial elements like oxygen, carbon, nitrogen, and iron to improve ductility and fracture toughness.
Titanium Grade 23 (Ti-6Al-4V ELI) is a top-tier titanium alloy known for its superior biocompatibility, high strength, and excellent corrosion resistance. It is the material of choice for critical medical implants and high-performance aerospace components, where reliability, safety, and durability are paramount. Its unique properties make it invaluable in applications that demand the best combination of strength, toughness, and corrosion resistance.
Contact us today for your Titanium
We're dedicated to helping our customers succeed
All orders are quoted individually and we aim to quote all enquiries within 24 hours. Quotes will detail if product is in stock and delivery times. To help us get the right information to you, please provide:
- Product Required
- Size & Quantity
- Any Specific Standards
- Destination / Shipping Terms
Key Characteristics
High Strength:
- Tensile Strength: Approximately 860-950 MPa (125-138 ksi), similar to Grade 5 but with improved fracture toughness due to the extra low interstitial content.
- Fatigue Resistance: Excellent fatigue resistance, making it suitable for dynamic applications where the material undergoes repeated stress.
Biocompatibility:
- Medical Applications: Grade 23 is highly biocompatible, making it the preferred material for medical implants, including orthopedic devices, dental implants, and surgical tools. It does not cause adverse reactions in the human body and integrates well with bone and tissue.
- Extra Low Interstitials: The reduced levels of oxygen, carbon, nitrogen, and iron enhance its suitability for medical applications by improving its ductility and reducing the risk of embrittlement.
Corrosion Resistance:
- Oxidation and Corrosion: Exhibits excellent resistance to corrosion in various environments, including bodily fluids, seawater, and harsh industrial conditions. Its performance is comparable to Grade 5, making it suitable for both medical and aerospace applications.
Fracture Toughness:
- Improved Ductility: The ELI designation means the alloy has better fracture toughness than standard Grade 5, offering improved performance in critical applications where the material must resist cracking or breaking under stress.
Weldability:
- Weldable: Like other titanium alloys, Grade 23 offers good weldability, though care must be taken to avoid contamination during the welding process.
Applications
- Medical Implants: Widely used for orthopedic implants (e.g., hip and knee replacements), spinal devices, dental implants, and other surgical components due to its biocompatibility and strength.
- Aerospace: Employed in high-stress components of aircraft and spacecraft, where weight savings, strength, and corrosion resistance are crucial. Typical applications include engine components, airframe parts, and fasteners.
- High-Performance Engineering: Used in advanced engineering applications that require high strength and excellent fatigue resistance, such as in motorsports, marine applications, and chemical processing equipment.
Versus Grade 5 (Ti-6Al-4V): Grade 23 is essentially a purer version of Grade 5 with extra low interstitial elements, leading to better ductility, fracture toughness, and biocompatibility. While both grades have similar mechanical properties, Grade 23 is preferred for medical applications.
Versus Grade 2 (Commercially Pure Titanium): Grade 23 offers much higher strength than Grade 2, making it suitable for structural applications, whereas Grade 2 is more often used for its corrosion resistance in less demanding environments.
Versus Grade 9 (Ti-3Al-2.5V): Grade 9 is more formable but has lower strength compared to Grade 23. Grade 23 is chosen when both high strength and biocompatibility are required.
Cost: Titanium Grade 23 is more expensive than commercially pure titanium grades and even some other titanium alloys, primarily due to the stringent processing required to achieve the ELI (Extra Low Interstitial) specification.
Availability: While widely used in medical and aerospace industries, its availability can be more limited compared to more common grades like Grade 5, potentially leading to higher costs and longer lead times.
OUR PRODUCTS
Titanium Products
