ASTM F136 Ti6Al4V ELI Titanium Alloy Bar for Surgical Implant
- Ti6Al4V ELI
- Strip: T≤4.76mm x W≤610mm
- Sheet: T≤4.76mm x W≥610mm
- Plate: T:4.76-101.6mm x W≥254mm
- Round Bar Dia: 4.76-101.6mm
- Wire Dia:≤4.76mm
Features
ASTM F136 Wrought Ti6Al4V ELI (UNS R56401) Titanium Alloy Bar for surgical implant
Chemical Composition of ASTM F136 Ti6Al4V ELI Titanium Alloy Bar for Surgical Implant (wt.%)
Element | Composition % (mass/mass) |
Nitrogen | max 0.05 |
Carbon | max 0.08 |
Hydrogen | max 0.012 (up to 0.0150% for material 0.032 in. and under) |
Iron | max 0.25 |
Oxygen | max 0.13 |
Aluminum | 5.5–6.5 |
Vanadium | 3.5–4.5 |
Titanium | balance (determined by difference) |
Mechanical Properties of ASTM F136 Ti6Al4V ELI Titanium Alloy Bar, Wire, and Forgings, Annealed
Nominal Diameter or Distance Between Parallel Sides | Tensile Strength
min psi (MPa) |
Yield Strength (0.2 % offset) min psi (MPa) | Elongation in 4D or 4W min % | Reduction of Area min % |
Under 0.187 in. thickness or diameter | 125,000 (860) | 115,000 (795) | 10 | – |
0.187 in. to under 1.75 in. incl. | 125,000 (860) | 115,000 (795) | 10 (25 for transverse) | – |
1.75 in. to under 2.50 in. incl. | 120,000 (825) | 110,000 (760) | 8 (20 for transverse) | – |
2.50 in. to 4.00 in. incl. | 120,000 (825) | 110,000 (760) | 8 (15 for transverse) | – |
Transverse requirements apply only to products from which a tensile specimen not less than 2.50 in. in length can be obtained.
Mechanical Properties of ASTM F136 Ti6Al4V ELI Titanium Alloy Sheet, Strip, and Plate, Annealed
Thickness Range | Tensile Strength
min psi (MPa) |
Yield Strength (0.2 % offset) min psi (MPa) | Elongation in 2 in. (50 mm) min % | Bend Test Mandrel Diameter |
Under 0.187 in. | 125,000 (860) | 115,000 (795) | 10 | 9T for under 0.070 in. thickness, 10T for 0.070 to 0.1875 in. |
0.187 in. to under 1.75 in. incl. | 125,000 (860) | 115,000 (795) | 10 | – |
1.75 in. to under 2.50 in. incl. | 120,000 (825) | 110,000 (760) | 8 | – |
2.50 in. to 4.00 in. incl. | 120,000 (825) | 110,000 (760) | 8 | – |
Transverse requirements for elongation and bend tests apply only to products from which a tensile specimen not less than 2.50 in. in length can be obtained.
Technical Specifications
Specification | Value |
Standard | ASTM F136 Wrought Ti-6Al-4V ELI (Extra Low Interstitial) Titanium Alloy Bar for Surgical Implant Applications (UNS R56401) |
Grade | Ti6Al4V ELI, Grade 23, UNS R56401 |
Condition | Annealed or Cold-worked |
Type | Alloy Strip, Sheet, Plate, Bar, Forging Bar, Wire, etc |
Dimension | Strip—Any product under 0.1875 in. (4.76 mm) in thickness and under 24 in. (610 mm) wide. |
Sheet—Any product under 0.1875 in. (4.76 mm) in thickness and 24 in. (610 mm) or more in width | |
Plate—Any product 0.1875 in. (4.76 mm) thick and over and 10 in. (254 mm) wide and over, with widths greater than five times thickness. Plate up to 4.00 in. (101.60 mm), thick inclusive is covered by this specification | |
Bar—Round bars and flats from 0.1875 in. (4.76 mm) to 4.00 in. (101.60 mm) in diameter or thickness (other sizes and shapes by special order). | |
Wire—Rounds, flats, or other shapes less than 0.1875 in. (4.76 mm) in diameter. | |
Density | 4.51g/cm³ |
Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
Tests | Chemical Composition, Mechanical Properties |
Key Properties
Biocompatibility: The alloy exhibits excellent biocompatibility, meaning it is non-toxic and does not trigger adverse reactions within the body. This is crucial for implant materials to avoid rejection or inflammation.
Corrosion Resistance: Titanium’s inherent corrosion resistance ensures that the implant remains stable and functional over extended periods in the body’s corrosive environment.
High Strength-to-Weight Ratio: Despite being lightweight, the alloy maintains high strength, making it suitable for load-bearing applications like bone plates and screws.
Low Modulus of Elasticity: The alloy’s modulus of elasticity is closer to bone than other metals. This reduces stress shielding, where the implant bears too much load, weakening bone.
Packing
Packed in plywood boxes.
Applications in Surgical Implants
Orthopedic Implants: Bone plates and screws for fracture fixation, Intramedullary rods for stabilizing long bone fractures, Hip and knee joint replacements, Spinal fusion devices
Dental Implants: Dental implants for replacing missing teeth, Orthodontic wires and brackets
Cardiovascular Implants: Pacemaker cases, Stents to keep blood vessels open
Neurosurgical Implants: Cranial plates for repairing skull defects