Super death steel
From Transformers Wiki
Super death steel (スーパーデススチール sūpā desu suchīru) is a metal. It comes in sheets and can be used to repair photon sailers.
Fiction
Beast Wars II cartoon
Starscream offered Halfshell of the Seacons a sheet of super death steel per Maximal defeated. With his photon sailer desperately in need of repair, Halfshell was forced to accept the deal. Face the Setting Sun
