Official Answer
Answer
Titanium Beta-C (Ti-3Al-8V-6Cr-4Mo-4Zr) offers a very high strength-to-weight ratio. With a density of $4.82$ g/cm$^3$ (compared to $7.9$ for steel), it provides a $40\%$ weight saving. After aging, it reaches tensile strengths of $1200$ MPa. Crucially, its low modulus ($E \approx 105$ GPa) allows for much larger elastic deflections than steel, which is beneficial for rings that must be expanded significantly for installation. Its excellent corrosion resistance in hydraulic fluids and Skydrol makes it the premium choice for commercial aircraft landing gear and flight control systems.
