What is EMT conduit made of?

EMT conduit is made from thin-wall steel tubing, typically coated with zinc to provide corrosion resistance. The zinc coating can be applied through pre-galvanization or hot-dip galvanization, depending on the application environment.

Normally pre-galvanized EMT has 6~8um zinc coating

Hot Dip Galvanized has more than 45um zinc coating

The steel construction provides mechanical protection for electrical cables while remaining lighter and easier to bend compared to rigid conduit systems.