Grade 4 Titanium is a commercially pure titanium alloy known for its excellent strength, corrosion resistance, and biocompatibility. Here are some key characteristics and typical applications of Grade 4 Titanium:

Ⅰ. Key Characteristics

① Purity: Grade 4 Titanium is a commercially pure titanium with a slightly lower purity than Grade 1, containing small amounts of oxygen and iron to enhance its mechanical properties.

② Strength: It is the strongest of the commercially pure titanium grades, providing higher strength compared to Grade 1, 2, and 3.

③ Corrosion Resistance: It offers excellent resistance to a wide range of corrosive environments, including seawater and industrial chemicals.

④ Biocompatibility: Non-toxic and biocompatible, making it suitable for medical and dental implants.

⑤ Ductility: Good ductility, though slightly lower than the more pure grades, allowing for ease of fabrication.

⑥ Weldability: Excellent weldability, suitable for various fabrication processes.

Ⅱ. Typical Applications

① Aerospace: Used in aircraft and spacecraft components where high strength and corrosion resistance are crucial.

② Medical and Dental: Ideal for implants, surgical instruments, and dental fixtures due to its high strength and biocompatibility.

③ Marine Applications: Suitable for seawater applications including boat fittings, marine hardware, and desalination plants.

④ Chemical Processing: Used in equipment such as heat exchangers, reaction vessels, and piping systems due to its corrosion resistance.

⑤ Industrial: Employed in the production and storage of chemicals and in various industrial equipment where strength and resistance to corrosion are required.

Ⅲ. Physical and Mechanical Properties

① Density: Approximately 4.51 g/cm³

② Tensile Strength: Around 550 MPa (80 ksi)

③ Yield Strength: Approximately 485 MPa (70 ksi)

④ Elongation: About 15% in 2 inches

⑤ Modulus of Elasticity: 105 GPa (15.2 Msi)

Grade 4 Titanium is chosen for applications that require a balance of high strength, corrosion resistance, and biocompatibility, making it a versatile material in demanding environments.