Chuo Spring Co. Ltd. announced that the company has developed a "spring made of titanium for ultra-light-weight suspension". This product greatly contributes to the extension of cruising range and realization of high vehicle motion performance through ultra-light-weight chassis required for EV vehicles and other electric vehicles through weight reduction. Three main features are summarized as follows. Realization of weight reduction: Titanium achieves a high weight reduction of about 40% compared to normal spring steel, while having the same required space and the same rigidity (spring constant). It will also contribute to the realization of lighter weight in the field of motor sports such as sports cars. Realization of high resistance to corrosion: It is also expected to contribute to applications in severe atmosphere such as seabed and space. In addition, the "high resistance to corrosion" unique to titanium makes it possible to use surface paint-free for springs, whereas surface paint is essential for normal spring steel. Integration of the company’s technologies: Compared with ordinary spring steel, titanium is extremely hard in workability, and it is also a difficult-to-handle material that requires complex and special treatment processes, such as "solution heat treatment" and "aging treatment".