ASTM F67 Unalloyed Titanium Bar for Surgical Implant
- Grade 1, Grade 2, Grade 3, Grade 4
- Biocompatibility
- Corrosion Resistance
- Lightweight
- Range of Strength Options
Features
ASTM F67 Unalloyed Titanium for Surgical Implant Applications
Grade: UNS R50250, UNS R50400, UNS R50550, UNS R50700
Chemical Composition (wt.%) of ASTM F67 Unalloyed Titanium Bar for Surgical Implant
Element | Grade 1
(UNS R50250) |
Grade 2
(UNS R50400) |
Grade 3
(UNS R50550) |
Grade 4
(UNS R50700) |
Nitrogen (max, %) | 0.03 | 0.03 | 0.05 | 0.05 |
Carbon (max, %) | 0.08 | 0.08 | 0.08 | 0.08 |
Hydrogen (max, %) | 0.015 | 0.015 | 0.015 | 0.015 |
Iron (max, %) | 0.2 | 0.3 | 0.3 | 0.5 |
Oxygen (max, %) | 0.18 | 0.25 | 0.35 | 0.4 |
Titanium (balance) | Balance | Balance | Balance | Balance |
Mechanical Properties for Annealed ASTM F67 Unalloyed Titanium Bar, Billet, Forgings, and Other Forms
Grade | Tensile Strength
(min, ksi/MPa) |
Yield Strength
0.2% Offset (min, ksi/MPa) |
Elongation
in 4D (min, %) |
Reduction of Area
(min, %) |
1 | 35 / 240 | 25 / 170 | 24 | 30 |
2 | 50 / 345 | 40 / 275 | 20 | 30 |
3 | 65 / 450 | 55 / 380 | 18 | 30 |
4 | 80 / 550 | 70 / 483 | 15 | 25 |
Mechanical Composition for Annealed ASTM F67 Unalloyed Titanium Sheet, Strip, and Plate
Grade | Tensile Strength
(min, ksi/MPa) |
Yield Strength
0.2% Offset (min/max, ksi/MPa) |
Elongation
in 2 in. or 50mm (min, %) |
Bend Test
Mandrel Diameter |
1 | 35 / 240 | 25 / 170 – 45 / 310 | 24 | 3T/4T |
2 | 50 / 345 | 40 / 275 – 65 / 450 | 20 | 4T/5T |
3 | 65 / 450 | 55 / 380 – 80 / 550 | 18 | 4T/5T |
4 | 80 / 550 | 70 / 483 – 95 / 655 | 15 | 5T/6T |
Mechanical Composition for Annealed ASTM F67 Unalloyed Titanium Wire
Diameter Range | Grade | Ultimate Tensile Strength
(min, ksi/MPa) |
Yield Strength
(0.2% offset, min, ksi/MPa) |
Elongation
(min, %) |
Reduction in Area
(min, %) |
0.13-6mm | 1-4 | Varies by Grade (35-80 ksi / 240-550 MPa) | Varies by Grade (25-70 ksi / 170-483 MPa) | Varies by Grade and Diameter | Varies by Grade |
Technical Specifications
Specification | Value |
Standard | ASTM F67 Unalloyed Titanium Bar for Surgical Implant Applications (UNS R50250, UNS R50400, UNS R50550, UNS R50700) |
Grade | Grade 1, Grade 2, Grade 3, Grade 4 |
Condition | Hot-worked, Cold-worked, Forged, Annealed, or Stress-relieved |
Type | Alloy Strip, Sheet, Plate, Bar, Forging Bar, Wire, etc |
Dimension | Strip—Any product 0.188 in. (4.76 mm) and under in thickness and less than 24 in. (610 mm) wide. |
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 and 10 in. (254 mm) wide and over, with widths greater than five times thickness. Plate up to 4 in. (102 mm), thick inclusive is covered by this specification. | |
Bar—Rounds, flats, or other shapes from 0.188 in.(4.76 mm) to 4 in. (102 mm) in diameter or thickness. (Other sizes and shapes by special order.) | |
Wire—Rounds, flats or other shapes less than 0.188 in. (4.76 mm) in diameter or thickness. | |
Density | 4.51g/cm³ |
Surface Finish | Descaled or pickled, abrasive blasted, chemically milled, ground, machined, peeled, polished, or as specified by the purchaser. |
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: Like its alloyed counterpart, unalloyed titanium exhibits excellent biocompatibility, making it suitable for implantation within the human body.
Corrosion Resistance: It boasts superior corrosion resistance, ensuring long-term stability within the body’s corrosive environment.
Lightweight: Unalloyed titanium is known for its lightweight nature, improving patient comfort.
Range of Strength Options: Different grades offer varying strengths, so surgeons can choose the most appropriate option based on the specific implant application and required load-bearing capacity.
Packing
Packed in plywood boxes.
Applications in Surgical Implants
Orthopedic Implants: Suture anchors, Ligament and tendon repair devices, and Small bone screws.
Dental Implants: Dental implants are used to replace missing teeth. Grade 4 unalloyed titanium, with its higher strength, may be preferred for implants needing to withstand greater chewing forces.
Cardiovascular Implants: Components for pacemakers and other cardiac devices.
Neurosurgical Implants: Components for hydrocephalus shunts and other neurological devices.