Grade 23 – Ti-6Al-4V ELI Medical Titanium Grade 23 ELI
Ti-6Al-4V ELI (Grade 23, UNS R56401) — the medical-grade variant of Ti-6Al-4V with extra-low interstitial elements (oxygen ≤0.13%, nitrogen, carbon) for enhanced fracture toughness, ductility, and fatigue resistance in implantable medical devices and cryogenic applications.
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What is Grade 23 Titanium (Ti-6Al-4V ELI)?
Grade 23 (Ti-6Al-4V ELI, Extra Low Interstitial) is a modified version of Grade 5 Ti-6Al-4V with reduced oxygen content (maximum 0.13% vs 0.20% in Grade 5) and tighter control of nitrogen, carbon, and hydrogen. This ELI chemistry significantly improves ductility, fracture toughness, and fatigue performance, making it the preferred material for implantable medical devices and cryogenic applications requiring superior reliability.
Classification
UNS R56401
Common Names
Key Characteristics
- Superior fracture toughness (KIC) compared to standard Grade 5
- Enhanced ductility and fatigue resistance for long-term implant reliability
- Excellent biocompatibility — ISO 10993 compliant
- Reduced notch sensitivity for improved performance in threaded implant designs
- Cryogenic-grade toughness — suitable for LNG and liquid hydrogen service
- Corrosion resistance equivalent to standard Ti-6Al-4V
Applicable Standards
Grade 23 titanium conforms to the following international material standards:
Mechanical & Physical Properties
Typical room-temperature properties for Grade 23 Ti-6Al-4V ELI (annealed condition):
Available Processing Methods
Grade 23 Ti-6Al-4V ELI can be processed using the following manufacturing techniques:
Typical Products & Components
Grade 23 Ti-6Al-4V ELI is commonly fabricated into the following downstream products:
Primary Industries
Grade 23 Ti-6Al-4V ELI serves as a material of choice across these industries:
Alternative Materials
Depending on application requirements, Grade 23 may be substituted by:
Why Choose Us for This Grade
BOZE CNC Ti is a trusted medical-grade precision manufacturer specializing in Grade 23 Ti-6Al-4V ELI components for orthopedic, dental, and spinal implant applications. Our ISO 13485-certified facility processes certified ASTM F136 material through Swiss-type CNC turning, 5-axis milling, and advanced surface finishing. Every component is produced with full material traceability from certified mill sources, CMM dimensional verification, and passivation per ASTM F86. Our engineering team provides confidential 24-hour DFM review for medical device drawings, with complete documentation packages for FDA/ISO 13485 compliance.
Frequently Asked Questions
Common questions from engineers about this titanium grade and our precision machining capabilities.
What is Grade 23 titanium (Ti-6Al-4V ELI) and how is it different from standard Grade 5?
Grade 23 (Ti-6Al-4V ELI) is an Extra Low Interstitial variant of Grade 5 with tightly controlled oxygen (≤0.13%), nitrogen, and carbon limits. This ELI chemistry delivers superior fracture toughness, ductility, and fatigue resistance, making it the preferred material for implantable medical devices and cryogenic applications where reliability is critical.
Can you machine Grade 23 ELI titanium for medical implant applications?
Yes. We machine Grade 23 Ti-6Al-4V ELI in our ISO 13485-compliant facility using Swiss-type CNC turning and 5-axis milling. We achieve tolerances up to ±0.003 mm (±0.00012 in) with surface finishes down to Ra 0.1 µm. All medical components are processed under strict process controls with full batch traceability.
What certifications do you provide with Grade 23 titanium medical components?
Every medical order includes EN 10204 Type 3.1 MTRs documenting chemical composition per ASTM F136, CMM dimensional inspection reports, surface finish verification, and passivation certification. UDI-compliant laser marking and FDA/ISO 13485 DHR traceability are available.
Related Components
26 precision CNC machined components manufactured from Grade 23 - Ti-6Al-4V ELI Medical Titanium
Titanium Acetabular Cup
Porous biomimetic acetabular cup (EBM 3D-printed)
CNC swiss turning for orthopedic joints geometryCryogenic deburring with Class 6g gaugeUltrasonic clean Class 10k with Class 6g gaugeSterile packaging with Class 6g gaugeTitanium AUV Propeller Shaft
Autonomous underwater vehicle propeller shaft
Ring forging radial-axial for deep sea geometryCNC turn-bore operation with 0.5mm corner radiusTIG welding autogenous with 0.5mm corner radiusHydrostatic pressure test with 0.5mm corner radiusTitanium Bone Plate
Modular locking compression bone plate
CNC swiss turning for trauma fixation geometryCryogenic deburring with 0.5mm corner radiusUltrasonic clean Class 10k with 0.5mm corner radiusSterile packaging with 0.5mm corner radiusTitanium Bone Screw
Cortical/cancellous locking compression bone screw
CNC swiss turning for trauma fixation geometryCryogenic deburring with 0.5mm corner radiusUltrasonic clean Class 10k with 0.5mm corner radiusSterile packaging with 0.5mm corner radiusTitanium Cryogenic Tank Clamp Band
Propellant tank clamp band (Ti-5Al-2.5Sn ELI)
5-axis CNC roughing for cryogenic hardware geometryHeat treatment (STA) at 200W fiber laserWire EDM contour profiling at 200W fiber laserCMM per AS9102 at 200W fiber laserTitanium Deep-Sea Release Hook Pin
Deep-sea instrument release mechanism hook pin
Ring forging radial-axial for deep sea geometryCNC turn-bore operation at 200W fiber laserTIG welding autogenous at 200W fiber laserHydrostatic pressure test at 200W fiber laserNeed Grade 23 Components?
Our engineering team delivers precision-machined components in Grade 23. Submit your RFQ for a competitive quote within 24–48 hours.
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze CNC Ti is the dedicated titanium manufacturing center of Baoji Boze Metal Products Co., Ltd.