ASTM F67
ASTM F67
Unalloyed Titanium, for Surgical Implant Applications
ASTM F67 is a standard specification for unalloyed titanium and titanium alloy for surgical implant applications (UNS R50250, UNS R50400, UNS R50550, UNS R50700) . It covers the chemical and mechanical requirements for four grades of titanium and titanium alloy, designated as Grades 1, 2, 3, and 4. The standard also includes requirements for heat treatment, testing, and inspection of the material.
The purpose of ASTM F67 is to ensure that titanium and titanium alloy surgical implant materials produced by manufacturers meet a set of minimum requirements for their intended use in medical applications such as surgical implants. This specification also covers the requirement for both wrought and cast forms of titanium and titanium alloy.
Chemical Composition
Chemical Composition
Analysis Tolerances
Chemical Composition
| 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, maxB | 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 |
Analysis Tolerances
| Grade | Tensile Strength, Min ksi | Tensile Strength, Min MPA | Yield Strength,A (0.2 % Offset) min ksi | Yield Strength,A (0.2 % Offset) min MPA | Elongation in 4D, min, % | Reduction of Area, min, %B |
|---|---|---|---|---|---|---|
| 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 Properties
Annealed-Bar, Billet, Forging, Wire and Other Forms
Annealed-Sheet, Strip, and Plate
Annealed-Bar, Billet, Forging, Wire and Other Forms
| Grade | Tensile Strength,A min KSI | Tensile Strength,A min MPA | Yield Strength,A (0.2 % Offset), min, KSI | Yield Strength,A (0.2 % Offset), min, MPA | Yield Strength,A (0.2 % Offset), max, KSI | Yield Strength,A (0.2 % Offset), max, MPA | Elongation in 2 in. or 50 mm, min,% | Bend Test Under 0.070 in. (1.8 mm) n Thickness | Bend Test 0.070 to 0.187 in. (1.8 to 4.75 mm) in Thickness |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
Annealed-Sheet, Strip, and Plate
| Grade | Tensile Strength,A min KSI | Tensile Strength,A min MPA | Yield Strength,A (0.2 % Offset), min, KSI | Yield Strength,A (0.2 % Offset), min, MPA | Yield Strength,A (0.2 % Offset), max, KSI | Yield Strength,A (0.2 % Offset), max, MPA | Elongation in 2 in. or 50 mm, min,% | Bend Test Under 0.070 in. (1.8 mm) n Thickness | Bend Test 0.070 to 0.187 in. (1.8 to 4.75 mm) in Thickness |
|---|---|---|---|---|---|---|---|---|---|
| 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 |
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