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.

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