Gr4 ASTM F67 Titanium Foil Description
1. Introduction
Gr4 ASTM F67 Titanium Foil is a high-strength medical-grade titanium foil made from Grade 4 commercially pure titanium. It is produced by vacuum melting, precision rolling, and annealing, and meets ASTM F67 implant standards. It keeps good biocompatibility and corrosion resistance, while offering the highest strength among commercially pure titanium grades, making it suitable for medical uses that need higher strength and stability.
In the ASTM F67 medical titanium system, Gr1, Gr2, and Gr4 Titanium Foil have clear differences:
- Gr1 ASTM F67 Titanium Foil: most flexible, lowest strength, suitable for complex forming
- Gr2 ASTM F67 Titanium Foil: balanced strength and formability, most commonly used
- Gr4 ASTM F67 Titanium Foil: highest strength, best for load-bearing and stable structures
Because of these differences, Gr4 is often used for strong medical parts, structural supports, and precision components that require high reliability. It also performs well in body fluid environments for long-term use.
During production, impurities like oxygen, hydrogen, and iron are strictly controlled. Clean processing and full quality checks ensure stable quality, uniform structure, and a clean surface suitable for medical use.
2. Standard Specifications
- Thickness range: 0.02–1.0 mm
- Width range: 15-680 mm
- Delivery form: coil/strip/cut-to-length plate (customizable)
- Custom thickness available: ≧0.005 mm,used in high-end medical devices, precision implants, and micro-scale biomedical applications requiring ultra-thin, high-strength titanium foil.
3. Production Line Process & Equipment Capabilities
Melting → Forging → Hot Rolling Breakdown → Multi‑pass 20‑high Precision Cold Rolling → Ultrasonic Cleaning → Continuous Online Annealing → Skin Pass Treatment → Slitting → Inspection and Packaging.
Key equipment:
1). 750mm 20-high precision rolling mill
2). Ultrasonic Cleaning Line
3).Continuous Annealing Line
4). High-Precision Leveling Line
5). Slitting Line
6). Grinding Line
4. Key Equipment & Process Capabilities
- 20-High Precision Rolling Mill: maximum rolling speed: 400 m/min
- Ultrasonic Cleaning Line: surface dyne level ≥40, maximum line speed: 30 m/min
- Continuous Annealing Line: maximum speed 150 m/min
- Slitting Line: thickness range: 0.02 mm-1.0 mm, width tolerance: ±0.1 mm
- Grinding Line: Improves surface consistency and coating adhesion.
Technical Specifications
Basic Product Information
| Item | Detail |
| Materials brand | Gr4 |
| Materials type | Commercially pure titanium (α-type) |
| Standard | ASTM F67 |
| Product modality | Titanium foil/titanium strip/titanium coil |
Specification
| Item | Parameter scope |
| Thickness | 0.02-1.0 mm |
| Width | 15-680 mm |
| Length | Customizabled |
| Surface | Bright/matte |
| Delivery Status | Annealed (M)/cold-worked (Y) |
Chemical Composition (ASTM F67)
| Element | Ti | O | Fe | C | N | H |
| Percentage | ≥99.0% | ≤0.40% | ≤0.50% | ≤0.08% | ≤0.05% | ≤0.015% |
Physical Properties
| Property | Value |
| Density | 4.51 g/cm³ |
| Melting point | 1668 °C |
| Operating temperature | ≤ 350 °C |
| Electrical resistivity | 0.50 μΩ·cm |
| Magnetism | Non-magnetic |
Mechanical Properties
| Performance indicators | Gr1 | Gr2 | Gr4 |
| Tensile strength | ≥240 MPa | ≥345 MPa | ≧550 MPa |
| Yield strength | 140-310 MPa | 275–450 MPa | 480–665 MPa |
| Elongation | ≥24% | ≥20% | ≥15% |
Compared with Gr1 & Gr2
| Item | Gr1 | Gr2 | Gr4 |
| Strength grade | Low | Medium | High |
| Ductility | Extremely high | Good | Medium |
| Formability | Excellent | Excellent | Moderate |
| Deformation resistance | Weak | Medium | Strong |
| Application | Deep forming | General use | Load-bearing |
Features
- Highest strength among commercially pure titanium (ASTM F67), with excellent structural stability.
- Excellent corrosion resistance in body fluids and chloride environments for long-term use.
- Good biocompatibility, fully meeting implant-grade safety requirements.
- Lightweight material, suitable for compact and lightweight medical designs.
- Good formability, suitable for stamping, bending, and precision forming.
- High surface cleanliness and consistency, ensuring reliable medical performance.
Applications
- Surgical instruments and high-strength medical tools.
- Structural components for medical devices.
- Orthopedic support parts and reinforcement elements.
- Dental instruments and auxiliary components.
- Precision micro medical parts and thin-walled structures.
- Medical equipment requiring high strength and long-term stability.
Custom Processing Capabilities
1. Production Line Strength
Annual capacity: 3,000 tons for high-end strip and foil materials.
2. Advanced Equipment Capabilities
750 mm 20-high precision rolling mill
Ultrasonic Cleaning Line
Continuous Annealing Line
High-Precision Leveling Line
Slitting line
Grinding Line
3. Comprehensive Processing Service
A. Materials: titanium, nickel, zirconium and their alloys
Specifications: thickness 0.02–1.0 mm, width 15–680 mm, customize according to requirement
B. Surface treatment: cleaning, sanding, annealing; available in bright, matte and other function surface
C. Dimensional & flatness control: precise control of thickness, tolerances and surface flatness
D. Slitting & cutting to length: suitable for ultra-thin wide strips with high yield and stable quality
E. Mass delivery: annual capacity of 3,000 tons to meet large-volume, high-standard custom orders