Titanium Grade 37, also known as Ti-6Al-4V STA (Solution Treated and Aged), is a titanium alloy that is typically a variant of the widely used Ti-6Al-4V alloy. Here are the key characteristics and typical applications of Grade 37 Titanium:

Ⅰ. Key Characteristics

① Composition: Alloyed with approximately 6% aluminum and 4% vanadium, with possibly slight modifications or specific processing (STA) for improved properties.

② Strength: High strength-to-weight ratio, making it one of the strongest titanium alloys.

③ Corrosion Resistance: Excellent resistance to corrosion in various environments, including seawater and oxidizing acids.

④ Heat Treatment: Typically undergoes solution treatment and aging (STA) to enhance mechanical properties.

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

⑥ Ductility: Good ductility, allowing for ease of forming and shaping.

⑦ Fatigue Resistance: Good fatigue resistance, suitable for applications subjected to cyclic loading.

Ⅱ. Typical Applications

① Aerospace: Used extensively in aerospace applications such as aircraft components, engine parts, and structural components due to its high strength, lightweight, and corrosion resistance.

② Marine: Suitable for marine applications including seawater piping, fittings, and marine hardware.

③ Biomedical: Used in medical implants such as orthopedic implants (hip and knee replacements) and dental implants due to its biocompatibility and strength.

④ Automotive: Utilized in automotive components where high strength and corrosion resistance are required, such as exhaust systems and engine components.

Ⅲ. Physical and Mechanical Properties

① Density: Approximately 4.43 g/cm³

② Tensile Strength: Typically around 1000 MPa (145 ksi) in the annealed condition

③ Yield Strength: Approximately 900 MPa (130 ksi) in the annealed condition

④ Elongation: About 10-15% in 2 inches

⑤ Modulus of Elasticity: 110 GPa (16 Msi)

Titanium Grade 37 (Ti-6Al-4V STA) is a versatile titanium alloy known for its combination of high strength, corrosion resistance, and lightweight properties. It is widely used across industries where these properties are crucial, including aerospace, marine, biomedical, and automotive sectors.