ASTM F1295 Titanium Alloy Bar for Surgical Implant
- Grade: Ti6Al7Nb
- Round Bar Dia:4.76-102mm
- Round Wire Dia:≤4.76mm
- Strip Size: T≤4.76mm x W≤610mm
- Sheet Size: T≤4.76mm x W≤610mm
- Plate Size: T4.76-101.6mm x W≥254mm
Features
ASTM F1295 Wrought Ti-6Al-7Nb (UNS R56700) Titanium Alloy Bar for Surgical Implant
Chemical Composition (wt.%)
| Element | Minimum | Maximum |
|---|---|---|
| Aluminum (Al) | 5.5 | 6.5 |
| Niobium (Nb) | 6.5 | 7.5 |
| Carbon (C) | – | 0.08 |
| Iron (Fe) | – | 0.25 |
| Oxygen (O) | – | 0.20 |
| Nitrogen (N) | – | 0.05 |
| Hydrogen (H) | – | 0.0125 |
| Titanium (Ti) | Balance | – |
Note: The remainder is titanium along with traces of other elements not exceeding specified limits.
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (minimum) | 900 MPa (130,000 psi) |
| Yield Strength (0.2% offset, minimum) | 800 MPa (116,000 psi) |
| Elongation (minimum) | 10% in 4D |
| Reduction of Area (minimum) | 25% |
These values represent a general guideline for Ti-6Al-7Nb alloy under ASTM F1295.
Technical Specifications
| Specification | Value |
| Standard | ASTM F1295 Wrought Ti-6Al-7Nb (UNS R56700) Titanium Alloy Bar for Surgical Implant Applications |
| Grade | Ti6Al7Nb |
| Condition & Finish | Annealed, cold-worked, or hot-worked; Descaled or pickled, abrasive-blasted, chemically milled, ground, machined, peeled, or polished finish. |
| Type | Alloy bar, wire, sheet, strip, and plate |
| Dimension | Bar—Rounds, flats, or other shapes from 0.188 in. (4.76 mm) to 4.0 in. (102 mm) in diameter or thickness. Other sizes and shapes by special order. |
| Forging Bar—Bar as described in 4.1, used in the production of forgings. This product may be furnished in the hot-worked condition. | |
| Wire—Rounds, flats, or other shapes less than 0.188 in. (4.76 mm) in diameter or thickness. | |
| Strip—Any product 0.188 in. (4.76 mm) and under in thickness and less than 24 in. (610 mm) in width. | |
| Sheet—Any product 0.188 in. (4.76 mm) and under in thickness and 24 in. (610 mm) or more in width. | |
| Plate—Any product 0.188 in (4.76 mm) thick and over 10 in. (254 mm) wide and over, with widths greater than five times thickness. Plate up to 4 in. (101.60 mm), thick inclusive is covered by this specification. | |
| 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 |
Packing
Packed in plywood boxes.
Applications
Bone screws and plates: Ti-6A-7Nb is used for fracture fixation and internal bone fixation due to its biocompatibility and strength. Its lower modulus of elasticity can be advantageous in certain cases, reducing stress shielding.
Spinal implants: Rods, hooks, and screws used in spinal fusion surgeries benefit from their good fatigue resistance and biocompatibility.
Joint replacements: Components for hip, knee, and other joint replacements can utilize Ti-6Al-7Nb, especially where its lower modulus of elasticity aligns better with the mechanical properties of bone.
Dental implants: Emerging applications in dental implants leverage their biocompatibility and mechanical properties.
