Titanium Grade 5 (6Al4V)

General Characteristics

Titanium Grade 5, also known as Ti-6Al-4V, is one of the most widely used titanium alloys and is known for its high mechanical strength and good corrosion resistance. In this titanium alloy, aluminum and vanadium contribute to excellent mechanical properties, making it a preferred choice for applications involving high loads and extreme conditions. Grade 5 titanium is particularly well suited for demanding applications in the aerospace, automotive, and medical industries, where both strength and corrosion resistance are essential.

The high mechanical strength of Grade 5 titanium makes it ideal for structural components that must withstand heavy mechanical loads, such as engine parts or landing gear components. In addition, Grade 5 titanium is highly resistant to material fatigue and crack initiation and propagation. It also provides excellent corrosion resistance in many aggressive environments, which makes it highly valuable in the chemical industry and for heat exchangers. Its good weldability and machinability make it suitable for a wide range of industrial applications.

Applications:

• Engine components in the aerospace sector
• Aircraft landing gear and structural parts in automotive manufacturing
• Fasteners and connectors in industrial technology
• Oil and gas installations in offshore applications
• Defense industry materials

Physical Properties:

• Density: 4,47 g/cm³
• Specific Heat: 0,56 J/(g·K)
• Thermal Conductivity: 6,7 W/(m·K)
• Modulus of Elasticity: 114 (KN/mm²)
• Electrical Resistivity: 1,71 Ω·mm²/m
• Thermal Expansion: 8,9·10⁻⁶/K
• Beta-Transus Temperature: 996 °C

Mechanical Properties:

• Tensile Strength: 895 MPa min.
• Yield Strength: 828 MPa min.
• Elongation: 10% min.

Heat Treatments:

• Annealing (Soft Annealing): 700 – 840 °C
• Stress Relief Annealing: 550 – 700 °C

The heat treatment of Grade 5 titanium requires a protective gas atmosphere or a vacuum environment due to titanium’s high affinity for oxygen, which can make the material brittle.

Welding Methods:

MIG (Metal Inert Gas)
TIG (Tungsten Inert Gas)
Argon shielding gas welding
Plasma welding
Laser welding
Electron beam welding