Aerospace GR4 Titanium Foil Description
1. Introduction
Aerospace Gr4 Titanium Foil is a high-strength titanium foil made from Grade 4 commercially pure titanium, produced to aerospace standards such as AMS 4901. It offers the highest strength among commercially pure titanium grades, while still maintaining good corrosion resistance and a stable α-phase structure without heat treatment. This ensures reliable performance in long-term use under stress, vibration, and harsh aerospace environments. Vacuum melting and precision rolling with strict control of O, N, and H elements provide consistent quality and stable properties.
Compared with Gr1 and Gr2 titanium foils, Gr4 provides higher strength and better structural stability. Gr1 is the most ductile, Gr2 offers a balance of strength and formability, while Gr4 is chosen when higher strength and load-bearing performance are required.
It is commonly used in aircraft structural parts, thin-wall components, piping systems, and other aerospace parts that require high strength, corrosion resistance, and long-term reliability.
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 precision aerospace micro-components and functional thin-layer parts 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: 0.08 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 B265 |
| Product modality | Titanium foil/titanium strip/titanium coil |
Specification
| Item | Parameter scope |
| Thickness | 0.02-1.0 mm |
| Width | 15-680 mm |
| Length | Customizable |
| Surface | Bright/matte |
| Delivery status | Annealed (M)/cold-worked (Y) |
Chemical Composition
| Element | Ti | O | Fe | C | N | H |
| Percentage | ≥99.0% | ≤0.40% | ≤0.50% | ≤0.08% | ≤0.05% | ≤0.015% |
Mechanical Properties
| Property | Value |
| Density | 4.51 g/cm³ |
| Tensile strength | ≥550 MPa |
| Yield strength | 480–665 MPa |
| Elongation | ≥15% |
Features
- Highest strength among commercially pure titanium (Gr4), ensuring excellent structural reliability
- Excellent corrosion resistance in aerospace and harsh environments
- Stable α-phase structure, no heat treatment required for strengthening
- Good balance of strength and formability compared to Gr1 and Gr2
- High consistency and stable performance through vacuum melting and precision rolling
- Suitable for high-reliability aerospace applications with strict quality requirements
Technological Advantages
- Strict control over surface color difference to ensure uniform appearance and color consistency.
- Precise dPrecise dimension control to meet tolerance specification requirement.imension control to meet tolerance specification requirement.
- Self-developed defatting formula can improve surface cleanliness.
- Optimized leveling tension to ensure excellent material flatness.
- Sanding process to enhance surface uniformity and texture.
- Stable annealing process to guarantee the overall material properties.
- High-precision slitting technology can increase product yield and quality.
Applications & Solutions
Engine Applications
Engine thermal insulation foils, sealing gaskets
Turbine flow guide components
Hydraulic system seals
Aircraft Structures
Fuselage and structural components
Lightweight skin panels
Electromagnetic shielding structures
Precision internal components
Space Applications
Satellite structural parts
Thermal protection liners
Propulsion system sealing materials
High-end Electronics & Semiconductors
Electromagnetic shielding foils
Chip heat dissipation structures
Precision conductive thin films
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