The cost of F316TI stainless steel is generally higher than the cost of F316 stainless steel due to the addition of titanium, which is an expensive alloying element. The exact cost difference may vary depending on several factors such as the supplier, the quantity ordered, and the current market conditions.

However, the cost difference may be offset by the improved performance and longer service life of F316TI stainless steel in high-temperature and corrosive environments, which can result in overall cost savings over time.

Overall, the choice between F316 and F316TI stainless steel will depend on the specific application requirements, including the operating conditions, the required mechanical properties, and the budget. It is important to consider the long-term costs and benefits of each material to make an informed decision.