Aystaesium

Aystaesium is the strongest metal in existence and is extremely lightweight.

Description
Aystaesium is a lustrous metal with a grayish tinge and is the strongest metal in existence and is extremely lightweight.

Uses
The metal was originally found on the Aystae Islands but since the destruction of the islands during the Aystae-Osiris war, the metal has become incredibly rare. It was brought to Earth by the Colgrenids Meteor Showers and is one of the only metals not discovered by Katerina Budzika, but she did use it.

Trivia

 * Blaire mispronouces the metal "Astesium"