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Product Introduction
Gr23 ELI titanium sheet is made from Ti-6Al-4V ELI-where ELI stands for Extra Low Interstitial. In simple terms, this means the levels of interstitial elements like oxygen, nitrogen, hydrogen, and carbon are kept exceptionally low. It's a refined version of the standard Gr23 alloy, and it's considered a high-end titanium material, especially in medical and aerospace applications.
Key Features Of Gr23 Eli Titanium Sheet
The ultra-low interstitial content is tightly controlled-oxygen at 0.13% or less, nitrogen at 0.03% or less, hydrogen at 0.0125% or less, and carbon at 0.08% or less. Compared to standard Ti-6Al-4V, this results in noticeably better fracture toughness and fatigue resistance, with less risk of brittleness.
From a biocompatibility standpoint, this alloy performs very well. It's non-toxic and non-allergenic, and it bonds well with bone and tissue without causing immune rejection. That's why it's one of the top choices for medical implants.
In terms of mechanical performance, it strikes a solid balance between strength and weight. In its annealed state, tensile strength falls between 860 and 950 MPa, while density sits at just 4.43 g/cm³-roughly 60% that of steel. So you get high strength without the weight penalty.
Corrosion resistance is another strong point. Whether exposed to bodily fluids, seawater, or various acids and alkalis, the material quickly forms a stable oxide layer (TiO₂) that protects against further attack. It holds up significantly better than standard stainless steels in aggressive environments.
When it comes to fabrication, the material can be processed through hot rolling, cold rolling, annealing, and welding. That said, cold workability is somewhat limited, so intermediate annealing is often needed to manage work hardening. If needed, heat treatment-solution aging in particular-can be used to fine-tune strength and toughness.
Core Applications
- Medical (the most common use)
This is where Gr23 Eli Titanium Sheet really shines. It's widely used in orthopedic implants like hip and knee replacements, bone screws, plates, and spinal fixation devices. In dentistry, it shows up in implant abutments and crown frameworks. Some high-end cardiovascular applications, such as heart valve stents, also rely on it.
- Aerospace
In aerospace, it's valued for components that need to hold up under high stress without adding unnecessary weight-think engine parts, fuselage structures, and wing connectors.
- Other High-End Uses
Beyond medical and aerospace, you'll also find it in deep-sea exploration gear, chemical processing equipment that demands corrosion resistance, and even high-end sporting goods like premium bicycle frames and golf club heads.
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