ASTM A90
Full Name
ASTM A90 – Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
Scope
This test method covers procedures for determining the weight (mass) of coating on iron or steel sheet, wire, and other articles in which the coating is zinc or a zinc alloy, such as zinc-5% aluminum (including zinc-5% aluminum-mischmetal and zinc-5% aluminum-0.1% magnesium), zinc-aluminum-magnesium (including zinc-5 to 9% aluminum-magnesium and zinc-9 to 13% aluminum-magnesium) or 55% aluminum-zinc.
Keywords
weight of coating; mass of coating; iron article; steel article; zinc coating; zinc-alloy coating