301 Bunker Hill Drive

Aitkin, MN 56431

MON-FRI : 8:00am - 4:00pm

(218) 927-2400

info@elemetmfg.com

Pre-Penetrant Etching

During the pre-penetrant process an etch is often used to remove any soft metal smears or residual trace metals left behind from the manufacturing process allowing the indications to be more easily identified. In the case of aluminum, depending on the specification the amount of metal removal is in the .0002” to .0004” range per side.