Bronce
Bronze is the internal mental pushing metal. An Allomancer burning bronze is able to detect the presence of Allomancy being used nearby. Feruchemists can use bronze to store wakefulness, and when used as a Hemalurgic spike, bronze steals mental Allomancy.
Allomantic Use
A bronze Misting is known as a Seeker. When an Allomancer burns bronze, he is able to detect nearby use of Allomancy. The Seeker feels pulses, like beats of a drum, emanating from the person burning a metal. The metals are grouped into fast and slow, pushing and pulling, and have their own signature feel. This is how it is known that bronze is a pushing metal, while copper is pulling.
Feruchemical use
Bronze, when used by a Feruchemist, can be used to store wakefulness. It allows the Feruchemist to stay awake for extended periods of time. A Feruchemist filling a bronzemind will fall asleep.
Hemalurgic Use
When used as a Hemalurgic spike, bronze steals mental Allomancy.