AMS4973 Ti-811 Ti8Al1Mo1V Titanium Alloy Forgings
- Grade: Ti8Al1Mo1V, Ti-811
- Forgings
- Good Strength and Ductility
- Lightweight
- Corrosion Resistance
- Weldability
- Cost-Effective
Features
AMS4973 Ti-811 Ti8Al1Mo1V Titanium Alloy Forgings, Solution Heat Treated and Stabilized
Chemical Composition (wt.%) of AMS4973 Ti-811 Ti8Al1Mo1V Titanium Alloy Forgings
| Element | Min | Max |
| Aluminum | 7.35 | 8.35 |
| Molybdenum | 0.75 | 1.25 |
| Vanadium | 0.75 | 1.25 |
| Iron | – | 0.30 |
| Oxygen | – | 0.12 |
| Carbon | – | 0.08 |
| Nitrogen | – | 0.05 (500 ppm) |
| Hydrogen | – | 0.0150 (150 ppm) |
| Yttrium (3.1.1) | – | 0.005 ( 50 ppm) |
| Other Elements, each (3.1.1) | – | 0.10 |
| Other Elements, total (3.1.1) | – | 0.40 |
| Titanium | remainder | |
Mechanical Properties of AMS4973 Ti-811 Ti8Al1Mo1V Titanium Alloy Forgings
| Property | Value |
|---|---|
| Tensile Strength (min) | 130 ksi (896 MPa) |
| Yield Strength (0.2% offset, min) | 120 ksi (827 MPa) |
| Elongation in 2 inches (min) | 10% |
| Reduction of Area (min) | 25% |
| Modulus of Elasticity | 16.5 x 10^6 psi (113.8 GPa) |
Technical Specifications
| Specification | Value |
| Standard | AMS4973 Ti-811 Ti8Al1Mo1V Titanium Alloy Forgings, Solution Heat Treated and Stabilized |
| Grade | Ti8Al1Mo1V, Ti-811 |
| Melting Practice | Alloy shall be multiple melted. The first melt shall be made by vacuum consumable electrode, nonconsumable electrode, electron beam cold hearth, or plasma arc cold hearth melting practice. The subsequent melt or melts shall be made using vacuum arc remelting (VAR) practice. Alloy additions are not permitted in the final melt cycle |
| Type | Forgings |
| Dimension | Bar Dia: 0.25 to 12 inches (6.35 to 304.8 mm), Length up to 20 feet (6096 mm) |
| Wire Dia: 0.020 to 0.500 inches (0.51 to 12.7 mm) | |
| Block: Width: 2 – 24 inches (50 -610mm) x Height: 2 – 24 inches (50-610mm) x Length: 2 – 20 feet (610-6100mm) | |
| Rings: OD: 250-1500mm, ID: 150-1400mm, Height: 20-500mm | |
| Density | 4.51g/cm³ |
| Condition | Forgings: Solution heat treated, stabilized, and descaled. Forging Stock: As ordered by the forging manufacturer |
| Heat Treatment | Forgings shall be heat treated as follows: furnace surveys and calibration of temperature controllers and recorders shall be in accordance with AMS2750: Solution Heat Treatment: Shall be as specified in 1.1 unless purchaser permits treatment as specified in 1.2. 1.1 Heat to a temperature within the range 1800 to 1850 °F (982 to 1010 °C), hold at the selected temperature within±25 °F (±14 °C) for 60 minutes ± 5 minutes, and quench in oil or water. When permitted by purchaser, forgings may be air cooled. 1.2 Heat to a temperature within the range 1650 to 1700 °F (899 to 927 °C), hold at the selected temperature within±25 °F (±14 °C) for 60 minutes ± 5 minutes, and cool at a rate equivalent to an air cool or faster. Stabilization Heat Treatment: Heat to a temperature within the range 1050 to 1100 °F (566 to 593 °C), hold at the selected temperature within ±15 °F (±8 °C) for not less than 8 hours, and cool in air |
| Inspection Certificate | EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection) |
| Tests | Chemical Composition, Mechanical Properties |
Key Features
Good Strength and Ductility: Ti-811 offers a good balance of strength and ductility, making it suitable for applications requiring structural integrity and formability.
Lightweight: It retains the lightweight characteristic of titanium alloys, contributing to weight savings in critical components.
Corrosion Resistance: Ti-811 exhibits good corrosion resistance in various environments, including seawater, chloride solutions, and some acids.
Weldability: The alloy is readily weldable using standard titanium welding techniques.
Cost-Effective: Ti-811 is often more cost-effective than higher-strength titanium alloys like Ti-6Al-4V.
Packing
Packed in plywood boxes.
Applications
Aircraft structural components: Used for brackets, fittings, and other structural parts where moderate strength and good formability are required.
Engine components: Employed for compressor cases, discs, and other engine parts needing a balance of strength and weight.
Process equipment: Utilized for components in chemical processing equipment, such as reactors, tanks, and piping systems, due to its corrosion resistance.
Offshore structures and equipment: Employed for components in offshore platforms and subsea equipment exposed to seawater environments.
Implants and surgical instruments: These are used for certain types of implants and surgical instruments requiring biocompatibility and moderate strength.
Bicycle frames and components: Ti-811’s combination of strength, lightweight, and corrosion resistance makes it suitable for high-performance bicycle frames and components.
Aircraft engine compressor cases: Ti-811 forgings are machined into compressor cases that require a balance of strength, weight, and corrosion resistance.
Chemical processing reactor vessels: Ti-811 forgings manufacture vessels that withstand corrosive chemicals and high pressures.
Offshore platform structural components: Ti-811 forgings are employed in structural elements of offshore platforms, offering strength and resistance to seawater corrosion.
