Titanium Grade 31, also known as Ti-0.15Pd, is a titanium alloy primarily alloyed with 0.15% palladium. This alloy is known for its excellent corrosion resistance, particularly in reducing environments. Here are the key characteristics and typical applications of Grade 31 Titanium:

Ⅰ. Key Characteristics

① Composition: Alloyed with 0.15% palladium.

② Corrosion Resistance: Excellent resistance to corrosion, especially in reducing environments such as acids and seawater.

③ Strength: Moderate strength, similar 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.

Ⅱ. Typical Applications

① Chemical Processing: Used in chemical processing equipment where corrosion resistance to acids, chlorides, and other aggressive media is critical.

② Marine: Suitable for marine applications, including seawater piping, fittings, and marine hardware, due to its corrosion resistance.

③ Aerospace: Utilized in aerospace components where corrosion resistance and moderate strength are required.

④ Medical: In some cases, used in medical implants where enhanced corrosion resistance properties are beneficial.

Ⅲ. Physical and Mechanical Properties

① Density: Approximately 4.51 g/cm³

② Tensile Strength: Typically around 400-600 MPa (58-87 ksi)

③ Yield Strength: Approximately 300-500 MPa (43-72 ksi)

④ Elongation: About 20-25% in 2 inches

⑤ Modulus of Elasticity: 105 GPa (15.2 Msi)

Titanium Grade 31 (Ti-0.15Pd) is a specialized titanium alloy primarily used in applications where enhanced corrosion resistance to aggressive environments is required. Its use is specific to industries requiring materials that can withstand chemical exposure or marine environments while providing sufficient mechanical properties for the intended application.