Cold Rolled Grade5 Titanium Foil
What is Cold Rolled Grade 5 Titanium Foil?
Grade 5 titanium (Ti-6Al-4V, UNS R56400) is the most widely used titanium alloy, accounting for approximately 50% of total titanium consumption. When produced through precision cold rolling to foil gauges, it delivers the highest strength-to-weight ratio available in ultra-thin titanium form, making it ideal for demanding applications where strength at minimum thickness is critical.
Chemical Composition (ASTM B265 Grade 5)
| Element | Composition Requirement (%) | Typical Value (%) |
|---|---|---|
| Titanium (Ti) | Balance | Balance |
| Aluminum (Al) | 5.5 – 6.5 | 6.0 – 6.2 |
| Vanadium (V) | 3.5 – 4.5 | 4.0 – 4.2 |
| Iron (Fe) | ≤ 0.40 | 0.15 – 0.20 |
| Oxygen (O) | ≤ 0.20 | 0.12 – 0.18 |
| Carbon (C) | ≤ 0.08 | 0.01 – 0.02 |
| Nitrogen (N) | ≤ 0.05 | 0.01 – 0.02 |
| Hydrogen (H) | ≤ 0.015 | 0.001 – 0.003 |
Mechanical Properties (Cold Rolled & Annealed)
| Property | ASTM B265 Requirement | Typical Value at Foil Gauges |
|---|---|---|
| Tensile Strength (Ultimate) | ≥ 895 MPa (≥ 130 ksi) | 920 – 1000 MPa |
| Yield Strength (0.2% Offset) | ≥ 828 MPa (≥ 120 ksi) | 850 – 950 MPa |
| Elongation | ≥ 10% | 8 – 12%* |
| Hardness (Rockwell C) | – | 32 – 36 HRC |
| Modulus of Elasticity | – | 105 – 115 GPa |
| Fatigue Strength (10⁷ cycles) | – | 450 – 550 MPa |
Physical Properties
| Property | Value | Units |
|---|---|---|
| Density | 4.43 | g/cm³ |
| Melting Point | 1605 – 1660 | °C |
| Thermal Conductivity | 6.7 – 7.5 | W/m·K |
| Electrical Resistivity | 1.7 – 1.8 | µΩ·m |
| Specific Heat Capacity | 560 | J/kg·K |
| Thermal Expansion | 8.6 – 9.2 | µm/m·°C |
| Magnetic Properties | Non-magnetic | – |
| Beta Transus | 980 – 1010 | °C |
Grade 5 vs Other Titanium Grades
| Property | Grade 1 | Grade 2 | Grade 5 | Grade 23 (ELI) |
|---|---|---|---|---|
| Tensile Strength (min) | 240 MPa | 345 MPa | 895 MPa | 860 MPa |
| Yield Strength (min) | 170 MPa | 275 MPa | 828 MPa | 795 MPa |
| Elongation | 24% | 20% | 10% | 10% |
| Formability | Excellent | Very Good | Moderate | Moderate-Good |
| Relative Strength | 1.0x | 1.4x | 3.7x | 3.6x |
| Primary Use | Forming | General | High-strength | Medical implants |
FAQ
Q1: What is the main advantage of Grade 5 foil over Grade 2?
Grade 5 offers 2.6× higher strength than Grade 2, allowing for thinner sections in load-bearing applications while maintaining structural integrity.
Q2: What is the thinnest Grade 5 foil available?
Grade 5 foil is available down to 0.012 mm (12 microns, 0.0005 inches) .
Q3: Can Grade 5 foil be formed at room temperature?
Grade 5 has limited formability at room temperature. For complex shapes, warm forming (300-600°C) is recommended. Simple bends with larger radii are possible at room temperature.
Q4: What surface finishes are available?
Cold Rolled Bright – standard (Ra 0.2-0.4 µm)
2B Finish – for clean applications (Ra 0.3-0.5 µm)
Q5: What is the minimum order quantity?
Standard foils: 1 kg or 1 roll minimum
Sample quantities: Available for R&D
About Our Factory
Our factory is a specialized titanium manufacturing facility equipped with VAR furnaces, plate rolling mills, and 20-high Sendzimir cold rolling mills capable of producing foils down to 0.012 mm thickness. We maintain ISO 9001:2015, AS9100D, and ISO 13485:2016 certifications, with in-house laboratories featuring spectrometers and LECO analyzers for precise chemistry verification. From vacuum annealing to precision slitting, every process is designed to meet the stringent requirements of aerospace, medical, and industrial applications worldwide.
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