Ti-8Al-1Mo-1V
UNS R54810
Description
Ti-8Al-1Mo-1V (Titanium 8-1-1) is a near alpha alloy with the alloying element of Al, Mo, V, and Fe, in which Al is the alpha stabilizer and the Mo, V, and Fe result in a small amount of beta formation. The alloy has the characteristics of low density, high modulus, high stiffness/density ratio, moderate to high strength, good elevated temperature tensile properties and excellent creep resistance (for operating temperatures up to 455 °C). Titanium 8-1-1 may be either hot or cold-formed. Popular methods include hydro-press, stretch or drop-hammer. It is primarily used in aircraft engine applications.
Chemical Component
| Ti | Fe | O | C | N | H | Mo | Al | V | Others |
|---|---|---|---|---|---|---|---|---|---|
| Balance | 0.30% max | 0.15% max | 0.08% max | 0.05% max | 0.0125% max | 0.75-1.25% | 7.35-8.35% | 0.75-1.25% | 0.40% max (total) |
Basic Information
| Items | Ti-8Al-1Mo-1V |
|---|---|
| Catalog | ACAM-Ti-A003 |
| Density | 0.158 lb/in3 (4.37 g/cm3) |
| Thermal Expansion co-Efficient | At 32-212 °F: 4.72 µin/in°F (8.50 µm/m°C) |
| Thermal Conductivity | 41.6 BTU in/hr.ft2.°F (6 W/mK) |
| Volume Electrical Resistivity | 78 Ω·in (198 Ω·cm) |
| Melting Point | 2800 °F (1538 °C) |
Material Forms
Alfa Chemistry offers Ti-8Al-1Mo-1V in a variety of forms, including Sheet, Strip and Bar.
Typical Mechanical Properties
| Materials | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction of Area |
|---|---|---|---|---|---|
| Bar (solution treated and stabilized) | Up to 2.5" | 130 ksi min (896 Mpa min) | 120 ksi (827 Mpa) | 10% | 20% |
| 2.5"- 4.0" | 120 ksi min (827 Mpa min) | 110 ksi (758 Mpa) | 10% | 20% |
Additional Properties
Machinability: Although tough, Ti-8Al-1Mo-1V alloy can be machined using the right quantity of coolant flow, slow speeds and high feed rates.
Forming: Ti-8Al-1Mo-1V alloy can be hot or cold formed using hydropress, stretch or drop-hammer methods.
Welding: Weldability of grade Ti-8Al-1Mo-1V alloy is rated as fair.
Specifications
- AMS 4915 sheet, strip, plate (single annealed)
- AMS 4916 sheet, strip, plate (duples annealed)
- AMS 4972 bar, wire, ring (solution treated and stabilized)
- AMS 6910 bar (duplex annealed)
- AMS-T-9046 A-4 sheet, strip, plate
- AMS-T-9047 8Al-1Mo-1v bar
- MIL-T-9046J A-4 sheet, strip, plate
- MIL-T-9046H Type II Comp F sheet, strip, plate
- MIL-T-9047G 8Al-1Mo-1V bar
Applications
Ti-8Al-1Mo-1V can be used in a variety of applications, including:
- In jet engine components such as forged fan and compressor blades.
- Industrial components such as discs, spacers, seals, rings, etc.
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
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