Researchers unveil floating titanium lattice 70% stronger than steel at equal density

Researchers at RMIT University have developed a 3D-printed titanium lattice structure filled with polyurethane foam that floats even when damaged. The foam fills only the hollow titanium struts, letting water flow through the larger openings while keeping the structure buoyant. At equal density, it is 70% stronger than stainless steel and lost less than 1% of its strength after seawater exposure, pointing to promising marine infrastructure applications.