How uniform can I expect the color of an organic coating to be?

If you have all the metal for a given job painted at the same time, in a single set-up, the coating should be uniform.

However, most paint manufacturers expect their paints to vary a little from batch to batch, usually less than 2 delta E as measured by AATCC Test Method 173-1998.

This can result in a barely noticeable difference in color between batches of paint.

The differences can be larger with a translucent or metallic coating, however. Learn more about metallic coatings.