The same size of beam has to be larger in titanium. As an everyday reference I referred to a cycle frame which are often made in titanium but as I explained the tube section sizes has to be larger than a steel frame. You cannot have a frame in titanium with the same tube sizes as steel. Just as you cannot replace a steel beam of the same size as steel. It has to be larger.
Titanium can be used as a structural material equivalent to steel beams, but it requires different manufacturing processes and has distinct performance characteristics. While titanium has a high strength-to-weight ratio—being approximately 45% lighter than steel while maintaining comparable strength—it is not as strong per unit volume as high-grade steel. This means that for the same cross-sectional area, a titanium beam would generally be weaker than a steel beam. However, due to its lower density, a titanium beam can be made lighter while still achieving similar strength, though it would need to be larger in cross-section to match the load-bearing capacity of a steel beam.
Titanium is difficult to work and drill, adding more expense. Generally, only governments and the offshore oil industry are the only ones who can afford to use them. In offshore oil there are long term savings with its resistance to corrosion and not needing paint protection.
Though it has yield strength comparable to structural steel, and having weight significantly lighter, its modulus of elasticity is only half of the steel. Requiring the section to be larger and deeper to match the same deflection limit if steel is used. Though this condition varies on the design approach of the structure itself., there generally isn’t a gain of using in replace of steel. Specially the larger difference in the cost of titanium vs steel. Plus the fact that steel is hot rolled into shape and titanium beams need to be welded from plates. Basically, instead of picking something from stock you need to create each one individually.
So basically, you're not often right but you are wrong again and I am not
