Alpha-Beta (α-β) titanium alloys contain a mixture of alpha (HCP) and beta (BCC) phases at room temperature. This dual-phase structure is achieved by alloying titanium with both alpha and beta stabilizing elements.
These alloys combine high strength, excellent fatigue resistance, good toughness, and outstanding corrosion resistance, while remaining heat-treatable and microstructure-tunable.
Typical Alloying Elements
Alpha Stabilizers: Aluminum (Al), Oxygen (O)
Beta Stabilizers: Vanadium (V), Molybdenum (Mo), Iron (Fe), Niobium (Nb)
Common α-β titanium alloys include Ti-6Al-4V (Grade 5), Ti-6Al-4V ELI (Grade 23), Ti-6Al-6V-2Sn, and Ti-6Al-2Sn-4Zr-2Mo.
Mechanical Properties (Typical – Ti-6Al-4V)
| Property | Typical Value |
|---|---|
| Tensile Strength | ~900 – 1,100 MPa |
| Yield Strength | ~830 – 1,000 MPa |
| Elongation | ~10 – 15% |
| Elastic Modulus | ~110 GPa |
| Hardness | ~330 – 360 HV |
Key Physical Properties
Density: ~4.43 g/cm³
Melting Range: ~1,600 – 1,660 °C
Crystal Structure: α (HCP) + β (BCC)
Thermal Conductivity: ~6 – 8 W/m·K
Coefficient of Expansion: ~9.0 µm/m·K
Non-magnetic
Strengthening & Metallurgy
Alpha-beta titanium alloys are strengthened through solid-solution strengthening, heat treatment (solution treatment and aging), and precise microstructural control.
By tailoring heat treatment and thermomechanical processing, these alloys can be optimized for strength, fatigue life, toughness, or creep resistance.
Available Forms
Sheets & plates
Bars & rods
Tubes & pipes
Forgings & extrusions
Wires
Additive manufacturing powders
Applications
Aerospace structures & engine components
Medical implants & prosthetics
Automotive & motorsport parts
Oil, gas & marine hardware
Industrial & defense components
Why Choose Alpha-Beta Titanium?
✔ Best balance of strength, toughness, and corrosion resistance
✔ Heat-treatable with tunable properties
✔ Excellent fatigue and fracture resistance
✔ Lightweight with steel-like strength
✔ Proven performance across aerospace, medical, and industrial sectors
Alpha-beta titanium alloys represent the most versatile and widely used class of titanium materials, offering an optimal balance between alpha and beta systems.