Grade 23 Ti-6Al-4V ELI in the medical and aerospace industries
Oct 23, 2025
GNEE can provide the form
Products Description
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.
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.
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.
Products provided by GNEE
| Product Form | Standard Grades | Standard Specifications (ASTM/ASME) | Common Dimensions | Common States |
|---|---|---|---|---|
| Titanium Pipe & Tube | ||||
| Seamless Pipe | Gr. 1, Gr. 2, Gr. 3, Gr. 7, Gr. 9, Gr. 12, Gr. 16, Gr. 17 | ASTM B861, ASME SB861 | OD: 6 mm - 114 mm (1/4" - 4") Wall Thickness: 0.5 mm - 8.0 mm Length: up to 15 m |
Annealed |
| Welded Tube | Gr. 1, Gr. 2, Gr. 9, Gr. 12 | ASTM B862, ASME SB862 | OD: 3 mm - 100 mm Wall Thickness: 0.3 mm - 3.0 mm Length: up to 15 m |
Annealed, Welded & Cold-Drawn |
| Titanium Bar & Rod | ||||
| Bar (Round, Hex, Square) | Gr. 1, Gr. 2, Gr. 3, Gr. 4, Gr. 5 (Ti-6Al-4V), Gr. 7, Gr. 9, Gr. 12, Gr. 16, Gr. 17, Gr. 23 (Ti-6Al-4V ELI) | ASTM B348, ASME SB348 | Diameter / Width: 5 mm - 300 mm Length: 3 m, 4 m, or cut to length |
Hot Rolled, Cold Drawn, Annealed, Forged |
| Wire & Rod | Gr. 1, Gr. 2, Gr. 4, Gr. 5 | ASTM B348, ASTM F67, ASTM F136 | Diameter: 0.5 mm - 10 mm (Wire) Diameter: 10 mm - 25 mm (Rod) Coil Weight: Custom |
Annealed, Cold Worked |
| Titanium Plate & Sheet | ||||
| Plate | Gr. 1, Gr. 2, Gr. 3, Gr. 4, Gr. 5 (Ti-6Al-4V), Gr. 7, Gr. 9, Gr. 12, Gr. 16, Gr. 17, Gr. 23 (Ti-6Al-4V ELI) | ASTM B265, ASME SB265 | Thickness: 4.76 mm (3/16") - 100 mm Width: 600 mm - 2000 mm Length: up to 6000 mm |
Hot Rolled, Annealed, Mill Annealed |
| Sheet | Gr. 1, Gr. 2, Gr. 3, Gr. 4, Gr. 5, Gr. 7, Gr. 9, Gr. 12 | ASTM B265, ASME SB265 | Thickness: 0.1 mm - 4.75 mm Width: 600 mm - 1500 mm Length: up to 3000 mm |
Cold Rolled, Annealed |
| Titanium Foil | ||||
| Foil / Strip | Gr. 1, Gr. 2 | ASTM B265 | Thickness: 0.025 mm - 0.1 mm Width: 50 mm - 500 mm Coil / Cut Length |
Cold Rolled, Annealed |
