DESIGNING OUT corrosion at the wheel

The case for advanced powder coatings.

Corrosion in automotive components is often framed as a cost problem, but for design and manufacturing engineers it is more accurately understood as a system-level failure mechanism. Nowhere is this more visible than in wheel assemblies, where environmental exposure, mechanical damage, and coating performance intersect. For wheel manufacturers, corrosion is not simply a maintenance concern; it is a function of material selection, geometry, surface preparation, and coating system design, all interacting under real-world conditions.

The global cost of corrosion is frequently cited in trillions of dollars annually. Estimates from the Association for Materials Protection and Performance (AMPP) place this figure at over $3 trillion, with up to 35% considered preventable through improved design, material selection, and protective strategies. For engineers, the more relevant point is that a significant proportion of corrosion-related failure can be addressed through earlier-stage decisions. In practice, this means designing components and processes that limit the initiation and propagation of corrosion, rather than relying on coatings as a final barrier alone.