Agrinium

Agrinium was an alloy based on aluminium used to create solar sails, and was highly resistant to all forms of radiation.

Applied to droid armor, it created an extremely effective barrier against many forms of damage, and was often used on lightweight repair droids that maintained the sails on many deep-space sailing ships of the Old Sith Wars era.

Also, agrinium was used sometimes to make strong and lightweight melee weapon and tool grips.

Text and facts from the “Agrinium” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.