IIUC the RN used whatever ordinary steel it could get in 1942-5 to build it's carriers, as a result the Eagle and Ark Royal didn't keep as well as they would if they hade been built in peacetime whith high qualitiy steel. WI Britain had decided to gather a certain amount of high quality steel for use in the Audacious and Malta class carriers? As late war cancellations occured could the Eagle and Ark Royal have used the good steel allocated for the cancelled carriers? Would the use of high quality steel have allowed these ships to remain in good condition for a decade longer?