Hard anodizing improves the wear and corrosion resistance of aluminum components. Hard-anodized coatings are thermal and electric insulators. Since they are electrically insulating, they can be used for electrical isolation. Components treated with hard anodizing may be temporarily exposed to high thermal loads. As the high temperatures reach the base material evenly and with delays only, they will not damage the components. Hard anodizing is the finishing method to go for when it comes to aluminum components for mass applications.