Three parts Dragonsteel, one part aluminum. Aluminite is a lightweight metal often used to protect people and objects such as computers from magical interference.
Aluminite originates from Alumanate City, where it was used to protect buildings from the Boiling Rains before Industrial brass was created.
While more fragile than Dragonsteel, it is even more lightweight, and is not toxic if in contact with skin or human blood. Of all Dragonsteel alloys, this one is the easiest to obtain, but also the easiest to fake, making it possible to get a false alloy made more of nickel that can cause allergic reactions and is poor at suppressing magic.