Ti is not my problem. I say if Iran can go different ways and skip an entirely new metallurgy school which is also a expensive one, it should do so. If its not possible, then Iran should produce Ti alloys. We observe an asymmetrical approach in Irans actions to compensate shortcomings in resources. Basing new systems on inexpensive materials is one of such approaches, skipping a mach 3 rated turbofan and go for a liquid rocket motor based propulsion is another. Iran is not China to create equivalents to what Russia, France and the U.S have. The IRIAF is already playing the catching-up game with aluminium airframing for the Kowsar... while the IRGC-ASF goes fully asymmetrical.