Alloy TI 6AL/4V
- ALLOY TI 6AL/4V • UNS R56400 • WNR 3.7165 • Titanium Grade 5
Ti 6Al/4V (Titanium Grade 5) is the most widely used of all the alpha-beta titanium alloys accounting for more than 50% of total titanium usage. It is typically used in the annealed condition, at service temperatures through 400°C (750°F). Ti 6Al/4V is welded with matching or with ELI filler wire.
Ti 6Al/4V is significantly stronger than commercially pure titanium while having the same stiffness and thermal properties excluding thermal conductivity, which is about 60% lower in Grade 5 Ti than in CP Ti. Amongst its many advantages, it is heat treatable.
This grade is an excellent combination of strength, corrosion resistance, weld and fabricability. In consequence, its uses are numerous such as for military aircraft or turbines. It is also used in surgical implants. Generally, it is used in applications up to 400°C to improve ductility and toughness in cold-worked condition.
- Available Tube Product form
- Straight
- Seamless
- Typical Applications
- Surgical implants
- Aerospace tubing
- Pressure tubing
- Industries predominantly using this Grade
- Chemical processing
- Medical
- Oil and gas
- Aerospace
- Typical Manufacturing Specifications
- ASTMF1472
- ASTM B861
- Also individual customer specifications.
- Technical Data
Mechanical Properties
| Property | Annealed | Cold-worked | ||
| Tensile Rm | 116 | ksi (min) | 150 | ksi (min) |
| Tensile Rm | 800 | MPa (min) | 1034 | MPa (min) |
| R.p. 0.2% Yield | 102 | ksi (min) | 135 | ksi (min) |
| R.p. 0.2% Yield | 700 | MPa (min) | 930 | MPa (min) |
| Elongation (2” or 4D gl) | 10 | % (min) | 8 | % (min) |
Physical Properties (Room Temperature)
| Specific Heat (0-100°C) | 565 | J.kg-1.°K-1 |
| Thermal Conductivity | 6.7 | W.m -1.°K-1 |
| Thermal Expansion | 8.6 | μm/μm/°C |
| Modulus Elasticity | 120 | GPa |
| Electrical Resistivity | 17.1 | Ohm-cm |
| Density | 4.43 | g/cm3 |
Chemical Composition (% by weight)
| Element | Min | Max |
| Al | 5.5 | 6.75 |
| C | - | 0.08 |
| Fe | - | 0.4 |
| H | - | 0.015 |
| N | - | 0.05 |
| Ti | Balance | |
| O | - | 0.2 |
| V | 3.5 | 4.4 |
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