What is it?

A chatter is a pattern that can be seen on the surface of the steel coil, and appears in intervals. It can be caused when the material is out of balance, or formed imperfectly to create a non-circular form . Chatter marks are not a defect in the structure of the material, but cannot be corrected or eliminated once they appear. In addition, Chatter marks usually show through paint that is applied.

Chatter Mark