what is low background steel used for
The shallow waters of Scapa Flow allowed relatively easy access to the wrecks, and many were soon salvaged. A legend has grown up that much of the âlow-background steelâ from these ships was used in iron-room-type shielding applications, and in particular that NASA used some in the Voyager spacecraft. However, thatâs probably exaggerated â most of the ships were salvaged in the 1920s and â30s.