6Al-4V ELI is one of the most widely used Titanium alloys in the medical industry. It is certified to ASTM F136, and commonly referred to as implant grade 6-4 Titanium. It's properties of biocompatibility, corrosion resistance, high strength, and toughness make it especially suitable for implants and other medical devices.
The main difference between Ti-6Al-4V ELI (Grade 23) and Ti-6Al-4V (Grade 5) is that in ELI (Extra Low Interstitials) the maximum oxygen content is lowered to 0.13%. This gives the material an improved fracture toughness.
Among it's uses in the medical industry are:
- Orthopedic implants
- Bone and Joint Replacement
- Dental root implants
- Surgical Clips
- Cryogenic Vessels
6AL-4V ELI is also referred to as:
- Grade 23 Titanium
- ASTM F136
Chemical
| Chemical Range for 6AL-4V ELI |
| Element |
Minimum |
Maximum |
| Carbon |
-- |
0.08 |
| Nitrogen |
-- |
0.05 |
| Hydrogen |
-- |
0.012 |
| Iron |
-- |
0.25 |
| Oxygen |
-- |
0.13 |
| Aluminum |
5.5 |
6.5 |
| Vanadium |
3.5 |
4.5 |
| Titanium |
-- |
Balance |
Mechanical
| Typical Mechanical Properties for 6AL-4V ELI |
| Form |
Tensile Strength, min |
Yield Strength, min |
Elongation in 4D, min |
| Strip, Sheet and Plate-ASTM B265 |
120 ksi |
110 ksi |
10% |
| Bar and Rod-ASTM B348 |
120 ksi |
110 ksi |
<1.0" 7.5%, ≥1.0" 6.0% |
Physical
| Typical Physical Data for 6AL-4V ELI |
| Density |
0.160 lb / cu. in. |
| Electrical Resistivity |
1.71 µohms-m |
| Thermal Conductivity |
6.6-6.8 W/mK |
| Modulus of Elasticity |
16.5 psi x 10(6) |
Specs
| Specifications |
| ASTM B265-Gr23 (Sheet-Industrial) |
| ASTM B348-Gr23 (Bar-Industrial) |
| ASTM F136 (Medical) |
| AMS 4907 (Aerospace Sheet) |
| AMS 4930 (Aerospace Bar) |
| AMS-T 9046A AB-2 (Aerospace Sheet) |
| AMS-T 9047A AB-2 (Aerospace Bar) |
| MIL-T 9047J AB-2 (Aerospace Sheet) |
| MIL-T 9047G AB-2 (Aerospace Bar) |
| UNS R56401 |
