Titanium Grade 14, also known as Ti-5Al-2Sn-2Zr-4Mo-4Cr, is an advanced titanium alloy known for its exceptional strength, corrosion resistance, and heat resistance. This alloy is typically used in aerospace and marine applications where high-performance materials are required. Here are the key characteristics and typical applications of Grade 14 Titanium:

Ⅰ. Key Characteristics

① Composition: Alloyed with 5% aluminum, 2% tin, 2% zirconium, 4% molybdenum, and 4% chromium.

② Strength: High tensile and yield strength, significantly higher than commercially pure titanium grades.

③ Corrosion Resistance: Excellent resistance to corrosion in various environments, including seawater and high-temperature oxidizing atmospheres.

④ Heat Resistance: Maintains mechanical properties at elevated temperatures, suitable for applications requiring heat resistance.

⑤ Weldability: Good weldability, though care is needed due to its alloyed nature.

⑥ Fatigue Resistance: Excellent fatigue resistance, making it suitable for components subjected to cyclic loading.

⑦ Biocompatibility: Non-toxic and biocompatible, suitable for medical applications with appropriate surface treatments.

Ⅱ. Typical Applications

① Aerospace: Used in aircraft components such as landing gear, airframes, and engine components due to its high strength-to-weight ratio and heat resistance.

② Marine: Ideal for marine applications, including propeller shafts, underwater connectors, and offshore structures, due to its corrosion resistance.

③ Industrial: Used in chemical processing equipment, oil and gas industry components, and power generation where corrosion resistance and high strength are critical.

④ Medical: In specific medical applications requiring high strength and corrosion resistance, with suitable biocompatibility considerations.

⑤ Automotive: Used in high-performance automotive components, such as turbocharger components and exhaust systems, for its strength and heat resistance.

Ⅲ. Physical and Mechanical Properties

① Density: Approximately 4.5 g/cm³

② Tensile Strength: Typically around 1100 MPa (160 ksi)

③ Yield Strength: Approximately 1000 MPa (145 ksi)

④ Elongation: About 10-15% in 2 inches

⑤ Modulus of Elasticity: 110 GPa (16 Msi)

Grade 14 Titanium (Ti-5Al-2Sn-2Zr-4Mo-4Cr) is an advanced titanium alloy suited for demanding applications where a combination of high strength, corrosion resistance, heat resistance, and fatigue resistance is required. Its use is specialized and typically found in industries requiring high-performance materials capable of withstanding extreme conditions.