|
Re: Pre war steel in ships/planes
Another reason for wanting salvage early steel is purity. A lot of steel today has been through the mill several times. Each time through the process of smelt, process, mill, make things, and recycle, the metal picks up a new set of additives needed to make whatever type of steel was needed for the new gizmo. A lot of these don't magically vanish when the new gizmo reaches EOL and is recycled. All the added impurities limit what the steelmaker can do with the many times recycled metal.
A sunken ship from WWI or WWII is probably new steel that was first used in that ship and can be more valuable to a steel plant making specialty steel.
|