What is Pretreat Aluminum?

A special formulated coil process that leaves both sides of the aluminum sheet free from all contaminants. Sometimes pretreat is referred to as “Alodine” or “Conversion Coat.” When mill finish aluminum is pretreated, all the residual oil from the rolling mill is removed. After mill finish aluminum is pretreated, it is will be able to accept paint coatings, decorations, adhesives, or other special coatings.

What Type of Pretreat System Do We Use at Alumet?

Alumet Supply uses Permatreat 1700, a tri-chrome dry-in-place pretreatment for aluminum.

Pretreated Aluminum Product Image


  • .032, .040, .063, and .080 gauges
  • 48″ wide

Advantages of Pretreat

  • Saves you time and money
  • Corrosion-resistant
  • Eliminates all pre-finishing preparation steps
  • Provides good adhesion for any subsequent painting
  • RoHS Complaint (Chromate-Free)
  • Environmentally-Friendly


  • Food Containers
  • Appliances
  • Architectural and Construction
  • Sign
  • OEM