Duralumin is the internal enhancement pushing metal. An Allomancer burning duralumin is able to greatly enhance other metals they are burning. Feruchemists can use duralumin to store connection, and when used as a Hemalurgic spike, duralumin steals an unknown quality.
Allomantic Use
A duralumin Misting is known as a Duralumin Gnat. An Allomancer burning duralumin instantly uses up any metals being burned simultaneously, releasing an enormous burst of power from those metals. A duralumin Misting gains nothing from his powers.[1] Allomancer's duralumin is ninety-six percent aluminum, four percent copper [2]
Feruchemical Use
A duralumin Ferring is known as a Connector. Duralumin is used to store Spirtual connection. While filling a duraluminmind, other people's awareness and friendship of the Feruchemist will be reduced. Tapping the metalmind will allow the user to form trust relationships with others much faster.[1]
Hemalurgic Use
When used as a Hemalurgic spike, duralumin steals some unknown trait or quality.