Titanium Grade 33 is a titanium alloy that falls under the UNS designation R53300. This alloy is primarily composed of titanium with small additions of palladium (approximately 0.05%) and ruthenium (approximately 0.05%). Here are the key characteristics and typical applications of Grade 33 Titanium:

Ⅰ. Key Characteristics

① Composition: Primarily titanium alloyed with approximately 0.05% palladium and 0.05% ruthenium.

② Corrosion Resistance: Excellent resistance to corrosion in various environments, including seawater and chemical environments.

③ Strength: Moderate strength, comparable to commercially pure titanium grades.

④ Weldability: Good weldability, suitable for various fabrication processes.

⑤ Ductility: Good ductility, allowing for ease of forming and shaping.

⑥ Biocompatibility: Suitable for medical applications where biocompatibility is required.

⑦ Heat Resistance: Maintains mechanical properties at elevated temperatures, suitable for high-temperature applications.

Ⅱ. Typical Applications

① Marine: Used in marine applications due to its excellent corrosion resistance to seawater.

② Chemical Processing: Suitable for chemical processing equipment where corrosion resistance to acids, chlorides, and other aggressive media is critical.

③ Aerospace: In some cases, used in aerospace components where corrosion resistance and moderate strength are required.

④ Medical: Used in medical implants and surgical instruments where biocompatibility and corrosion resistance are essential.

⑤ Electronics: Utilized in electronics and semiconductor industries where corrosion resistance and conductivity are beneficial.

Ⅲ. Physical and Mechanical Properties

① Density: Approximately 4.51 g/cm³

② Tensile Strength: Typically around 600-800 MPa (87-116 ksi)

③ Yield Strength: Approximately 400-600 MPa (58-87 ksi)

④ Elongation: About 15-20% in 2 inches

⑤ Modulus of Elasticity: 105 GPa (15.2 Msi)

Titanium Grade 33 (UNS R53300) is a specialized titanium alloy suitable for a range of applications where corrosion resistance, biocompatibility, and moderate strength are required. Its specific composition with palladium and ruthenium additions enhances its performance in aggressive environments, making it particularly useful in marine, chemical processing, aerospace, medical, and electronic industries.