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Galvalume

Last updated: August 22, 2019

What Does Galvalume Mean?

Galvalume refers to a type of proprietary steel coating that consists of about 55% aluminum, 43.4% zinc and 1.6% silicon. Due to this composition, it is highly effective in protecting other base metals from corrosion and the elements.

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Corrosionpedia Explains Galvalume

Galvalume is widely used to coat the following types of metallic applications:

  • Roofing and siding
  • Unexposed automotive parts
  • Appliances
  • Computer cases
  • Pipes

Galvalume has a unique appearance similar to matte galvanized metal. It possesses high levels of strength, outdoor corrosion resistance and longevity. Despite its wide applicability, it generally is not used on concrete, mortar or other highly alkaline substances.

Galvalume contains zinc and aluminum, which may affect the substrate metal in various ways, including corrosion/heat resistance and galvanic protection.

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