Titanium alloy TA18 is a near-α titanium alloy, the main component of which is Ti-3Al-2.5V. In contrast, TC4 is a (α+β) titanium alloy composed of Ti-6Al-4V. These two titanium alloys differ in composition, resulting in their differences in properties and applications.
In terms of welding performance and cold forming performance, Ti3Al2.5V titanium alloy tube is better than Ti6Al4V. However, GR5 titanium alloy has better performance in comprehensive mechanical and mechanical properties. This difference gives them their own advantages in different application scenarios.
Ti3Al2.5V titanium alloy tube shows good corrosion resistance in many media due to its good cold formability and welding performance, as well as room temperature strength 20%~50% higher than industrial pure titanium. As a result, it is an ideal material for making high-pressure, lightweight conduits for aircraft.
As a heat-treated strengthened titanium alloy, Ti6Al4V titanium alloy has good weldability, sheet formability and forging performance. This makes it widely used in the aerospace field, such as the manufacture of jet engine compressor blades, impellers, etc. In addition, GR5 titanium alloy is also widely used in landing gear wheels and structural parts, fasteners, brackets, aircraft accessories, frames, truss structures and pipelines.
In general, Ti3Al2.5V alloy is a low-alloyed near-α titanium alloy with excellent comprehensive properties, especially suitable for making high-pressure resistant lightweight conduits on aircraft. Ti6Al4V titanium alloy has been successfully applied in aerospace, petrochemical, shipbuilding, automotive and pharmaceutical departments due to its excellent corrosion resistance, small density, high specific strength, good toughness and weldability. These two titanium alloys have their own advantages and play an important role in different fields.
