ASTM F67 GR4 Titanium Bar

 

ASTM F67 GR4 Titanium Bar is a type of titanium bar that is used in various applications due to its excellent strength, corrosion resistance and biocompatibility. It is made from commercially pure titanium, which is 99.5% pure titanium, and has a minimum tensile strength of 483 MPa.

The ASTM F67 GR4 Titanium Bar meets the standards set by the American Society for Testing and Materials (ASTM) for medical devices. It is widely used in the medical industry for the production of orthopedic implants such as bone plates, screws, dental implants, and prosthetics due to its biocompatibility and non-toxic nature.

This titanium bar is manufactured using different techniques such as hot rolling, cold rolling, and annealing to achieve the desired properties. The bar is available in various sizes, ranging from small diameters to large diameters, making it suitable for different applications.

The ASTM F67 GR4 Titanium Bar is highly resistant to corrosion in different environments, including biological fluids, alkaline solutions, and seawater, making it suitable for use in harsh environments. Additionally, it has a low modulus of elasticity, which makes it suitable for use in bone replacement applications.

 

 

 

1. Chemical Composition:

The chemical composition for ASTM F67 GR4 titanium bar must meet the following requirements:

- Titanium (Ti) Content: Between 98.0% and 99.8%

- Oxygen (O) Content: Up to a maximum of 0.40%

- Iron (Fe) Content: Up to a maximum of 0.50%

- Carbon (C) Content: Up to a maximum of 0.08%

- Nitrogen (N) Content: Up to a maximum of 0.05%

- Hydrogen (H) Content: Up to a maximum of 0.015%

- Other Elements: Up to a maximum of 0.30% (each), and up to a maximum of 0.50% (total)

 

2. Mechanical Properties:

The mechanical properties for ASTM F67 GR4 titanium bar must meet the following requirements:

- Ultimate Tensile Strength: At least 480 MPa (70 ksi)

- Yield Strength: At least 345 MPa (50 ksi)

- Elongation: At least 20%

- Reduction in Area: At least 30%

- Hardness: 120-160 HV

 

3. Dimensions and Tolerances:

The dimensions and tolerances for ASTM F67 GR4 titanium bar must meet the following requirements:

- Diameter: 6mm to 200mm

- Length: Up to 6000mm

- Straightness: 0.5mm/m

- Roundness: Within 70% of diameter tolerance

- Surface Finish: Ra max 3.2 microns

 

4. Testing and Certification:

The ASTM F67 GR4 titanium bar must undergo the following tests and certifications:

- Chemical Analysis

- Mechanical Testing

- Ultrasonic Testing

- Certification of Compliance with ASTM F67 Standard

 

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