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It blew my mind the day I realized they build almost 1200 MiG-25s. Plus 500+ MiG-31s, that's close from 1700 airframes.That's quite a large number of "almost Mach 3" interceptors.In comparison, the 40-something A-12 / SR-71 / YF-12 / M-21 were almost hand crafted by Lockheed.Steel is heavier than titanium, but overall mankind has mass build steel transport vehicles (things like locomotives and battleships) since the 19th century. Titanium is far harder.
It blew my mind the day I realized they build almost 1200 MiG-25s. Plus 500+ MiG-31s, that's close from 1700 airframes.
That's quite a large number of "almost Mach 3" interceptors.
In comparison, the 40-something A-12 / SR-71 / YF-12 / M-21 were almost hand crafted by Lockheed.
Steel is heavier than titanium, but overall mankind has mass build steel transport vehicles (things like locomotives and battleships) since the 19th century. Titanium is far harder.
