Metals & alloys · Titanium & zirconium alloys
Ti–6Al–4V ELI / Grade 23
An extra-low-interstitial Ti–6Al–4V variant used for implants, cryogenic hardware and fracture-critical aerospace components requiring improved toughness and ductility.
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01
Overview
- Material class
- Metals & alloys
- Category
- Titanium & zirconium alloys
- Family
- Alpha-Beta Titanium Alloy
- Product forms
- Sheet/plate, Bar/rod
Composition
| Constituent | Min | Max | Typical | Note |
|---|---|---|---|---|
| Al | 5.5 | 6.5 | 6 | |
| V | 3.5 | 4.5 | 4 | |
| O | 0.13 | 0.1 | ||
| Fe | 0.25 | 0.15 | ||
| Ti | Balance |
02
Properties and conditions
Engineering properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Density | 4.43 | g/cm³ | Representative; verify product form and condition |
| Elastic modulus | 110 | GPa | Representative; verify product form and condition |
| Yield strength | ~795–900 | MPa | annealed |
| Tensile strength | ~860–970 | MPa | Representative; verify product form and condition |
| Elongation | 10–18 | % | Representative; verify product form and condition |
| Fracture toughness | improved | relative to standard Grade 5 |
Conditions
HIP treated
Hot-isostatically pressed additive condition.
LPBF as-built
As-built additive condition.
Mill annealed
Low-interstitial wrought reference condition.
Solution treated and aged
Higher-strength condition.
03
Processing and use
Processing
- Product form, thermal history and manufacturing route materially affect performance.
Applications
- Orthopaedic implants
- Cryogenic pressure components
- Fracture-critical aerospace parts
Selection considerations
- Use the current governing standard and supplier certification for design or procurement.
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04
Standards and related materials
Standards and designations
| System | Designation | Note |
|---|---|---|
| ASTM | F136 / Grade 23 | |
| UNS | R56407 | |
| AMS | 4930 / 4967 | product dependent |
05
Sources and context
Sources
- ASTM F136 implant alloy specificationExisting reference
- Titanium product supplier Grade 23 dataExisting reference
- NASA materials selection resourcesApplication reference
- U.S. FDA materials and biocompatibility guidance resourcesApplication reference
- U.S. Department of Energy critical materials programStrategic reference
Confirm the applicable specification, product form and condition before using values for design or procurement.
Supply and sustainability
Availability and lead time depend on grade, product form, certification and regional supply chain.
Segregated recovery and closed-loop recycling improve material efficiency where practical.