- AAMA 2604
- Pre-Treatment coating process
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- Download:
- AAMA-powder-coating-spec.pdf
- Vanguard-coatings-line.pdf
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- AAMA 2604 is applicable to coatings of at least 30 micron (1.2 mils)
thickness intended primarily for commercial and architectural-grade
applications, utilizing ASTM test methods and performance criteria to
evaluate color uniformity, specular gloss, impact resistance and
chemical resistance. Compared to AAMA 2603, 2604 include additional
test methods and acceptance criteria for abrasion resistance, chemical
resistance and weathering. Weathering tests evaluate color retention,
chalk resistance, gloss retention and resistance to erosion after
mandatory extended outdoor test exposure in the South Florida
environment. AAMA 2604 recognizes high-performance coatings that could
involve non-chrome pretreatments, a necessity in some markets where
chrome pretreatments are not allowed due to environmental concerns
over the use of heavy metals.
