Grade 7 Titanium is an alpha-beta alloy known for its excellent corrosion resistance, particularly in reducing and oxidizing environments. This grade is essentially Grade 2 titanium but with a small addition of palladium, which significantly enhances its corrosion resistance. Here are some key characteristics and typical applications of Grade 7 Titanium:

Ⅰ. Key Characteristics

① Composition: Primarily titanium with 0.12-0.25% palladium.

② Corrosion Resistance: Exceptional resistance to corrosion in both reducing and oxidizing environments, including chlorides, making it the most corrosion-resistant titanium grade.

③ Strength: Similar strength to Grade 2, with good mechanical properties.

④ Ductility: High ductility, which allows for ease of fabrication and forming.

⑤ Weldability: Excellent weldability, suitable for various fabrication processes.

⑥ Biocompatibility: Non-toxic and biocompatible, suitable for medical applications.

Ⅱ. Typical Applications

① Chemical Processing: Ideal for equipment such as heat exchangers, reaction vessels, and piping systems where both reducing and oxidizing corrosive environments are encountered.

② Marine Applications: Suitable for seawater applications, including desalination plants, marine hardware, and ship components.

③ Medical: Used in medical devices and implants due to its biocompatibility and corrosion resistance.

④ Power Generation: Utilized in power generation plants, especially in environments where high corrosion resistance is required.

⑤ Industrial: Employed in various industrial applications, including the manufacturing of components exposed to aggressive chemical environments.

Ⅲ. Physical and Mechanical Properties

① Density: Approximately 4.51 g/cm³

② Tensile Strength: Around 345 MPa (50 ksi)

③ Yield Strength: Approximately 275 MPa (40 ksi)

④ Elongation: About 20% in 2 inches

⑤ Modulus of Elasticity: 105 GPa (15.2 Msi)

Grade 7 Titanium is chosen for applications where superior corrosion resistance is paramount. The addition of palladium significantly enhances its performance in harsh environments, making it suitable for critical applications in various industries.