Beta titanium alloys are titanium alloys in which the β phase (BCC structure) is stabilized at room temperature by sufficient β-stabilizing elements. They represent the highest-strength class of titanium alloys and are fully heat-treatable.
These alloys offer exceptional strength, deep hardenability, excellent cold formability before aging, and outstanding fatigue resistance.
Chemical Composition (Typical)
| Element Type | Representative Elements |
|---|---|
| β-Stabilizers | Mo, V, Nb, Ta, Cr, Fe |
| α-Stabilizers (minor) | Al, Sn |
| Typical Alloys | Ti-10V-2Fe-3Al, Ti-15V-3Cr-3Sn-3Al, Beta-C |
Mechanical Properties
| Property | Typical Range |
|---|---|
| Tensile Strength | 900 – 1,400 MPa |
| Yield Strength | 800 – 1,300 MPa |
| Elongation | 6 – 15% |
| Elastic Modulus | 95 – 110 GPa |
| Hardness (Aged) | 300 – 450 HV |
Physical Properties
| Property | Typical Value |
|---|---|
| Density | 4.6 – 4.9 g/cm³ |
| Crystal Structure | BCC (β Phase) |
| Melting Point | ~1,650 – 1,670 °C |
| Thermal Conductivity | 6 – 10 W/m·K |
| Thermal Expansion | ~9.0 µm/m·K |
| Magnetic Behavior | Non-magnetic |
Strengthening & Metallurgical Behavior
Beta titanium alloys are primarily strengthened by precipitation hardening. After solution treatment and quenching, controlled aging produces fine α precipitates within the β matrix, greatly increasing strength.
Solid-solution strengthening and grain size control further enhance mechanical performance, delivering steel-like strength at nearly half the weight.
Key Characteristics
✔ Highest strength among titanium alloys
✔ Excellent cold formability before aging
✔ Uniform hardening in thick sections
✔ Superior fatigue and fracture toughness
✔ Corrosion resistant and non-magnetic
Available Forms
Sheets & plates
Bars & rods
Forgings
Tubes & pipes
Extrusions
Wires
Applications
Aerospace
Landing gear, wing attachments, structural forgings
Automotive & Motorsport
Suspension springs, connecting rods, high-performance fasteners
Medical & Biomedical
Orthopedic implants, trauma fixation systems
Oil, Gas & Defense
Downhole tools, high-strength fasteners, armor systems
Why Choose Beta Titanium?
Choose Beta Titanium alloys when maximum strength, fatigue resistance, and complex formability are required at the lowest possible weight.
In simple terms:
Alpha Titanium – best for corrosion & heat stability
Alpha-Beta Titanium – best all-round performance
Beta Titanium – best for ultra-high strength and formability