While powder coating both aluminum and steel may look similar, the underlying processes differ significantly.
Steel Substrates
Steel requires aggressive pretreatment to prevent corrosion. Proper cleaning and conversion coating are essential for long-term durability.
Aluminum Substrates
Aluminum does not rust, but it oxidizes rapidly. Without proper surface preparation, adhesion failures are common.
Application and Cure Considerations
Differences in thermal mass and conductivity affect how aluminum and steel heat in the oven, influencing cure profiles and final appearance.
Why Substrate Knowledge Matters
Treating all metals the same increases the risk of premature coating failure.
