Titanium 5-2.5 ELI
5Al-2.5Sn ELI
Material Data Sheet
High service temperatures (480°C), Intermediate strength, Improved high-temperature strength compared to unalloyed Ti, Excellent weld fabricability, Oxidation resistance, Microstructure stability, Nonheat-treatable (contains only iron impurity as a beta-stablizing element)
Chemical Composition
| Element | Content (%) |
|---|---|
| Titanium, Ti | 92.5 |
| Aluminum, Al | ≤ 5.0 |
| Iron, Fe | ≤ 0.25 |
| Oxygen, O | ≤ 0.12 |
| Tin, Sn | ≤ 2.5 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 4.48 g/cc | 0.162 lb/in³ |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Brinell | 311 | 311 |
| Hardness, Knoop | 337 | 337 |
| Hardness, Rockwell C | 33 | 33 |
| Hardness, Vickers | 325 | 325 |
| Tensile Strength, Ultimate | 775 MPa | 112000 psi |
| Tensile Strength, Yield | 720 MPa | 104000 psi |
| Elongation at Break | 18% | 18% |
| Creep Strength | 276 MPa | 40000 psi |
| Tensile Modulus | 110 GPa | 16000 ksi |
| Notched Tensile Strength | 1080 MPa | 157000 psi |
| Poissons Ratio | 0.31 | 0.31 |
| Fatigue Strength | 410 MPa | 59500 psi |
| Fracture Toughness | 88.0 MPa-m½ | 80.1 ksi-in½ |
| Shear Modulus | 48.0 GPa | 6960 ksi |
| Charpy Impact | 44.0 J | 32.5 ft-lb |
Applications
Grade 6 Ti-5Al-2.5Sn ELI is used in the following application areas:
- Gas turbine engine casings and rings
- Aerospace structural parts, aircraft engine and airframe.
- Chemical processing equipment
Key Words: UNS R54521 (ELI); Ti-5-2.5
