ASTM A90/A90M
Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings
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About This Item
ASTM A90/A90M is the ASTM standard that describes a test method for determining the weight, or mass, of coating on iron and steel articles with zinc or zinc-alloy coatings. It is used to help verify coating amount in a consistent, defensible way, which matters for product evaluation, quality control, and compliance checks. By focusing on coating mass rather than appearance alone, this standard supports more reliable assessment of protective metallic coatings on steel and iron products.
Overview of ASTM A90/A90M
The official title, Standard Test Method for Weight [Mass] of Coating on Iron and Steel Articles with Zinc or Zinc-Alloy Coatings, indicates a test method intended to measure how much coating is present on coated ferrous articles. ASTM A90/A90M is commonly used when the amount of zinc or zinc-alloy coating must be confirmed for technical acceptance or process verification. In practical terms, it provides a standardized way to evaluate coating quantity on iron and steel articles using an ASTM-recognized approach.
Common use cases of ASTM A90/A90M
This standard is commonly used in coating inspection, receiving inspection, and manufacturing quality control for iron and steel articles with zinc or zinc-alloy coatings. It may be applied when buyers, producers, or labs need a consistent test method to assess coating mass as part of specification review or product acceptance. ASTM A90/A90M is also useful in engineering and procurement workflows where coating performance expectations depend on verified coating amount rather than visual appearance alone.
Benefits of using ASTM A90/A90M
Using ASTM A90/A90M helps improve consistency in coating evaluation and supports clearer communication between suppliers, laboratories, and purchasers. It can reduce ambiguity when confirming whether zinc or zinc-alloy coatings meet required levels and provides a recognized basis for compliance and documentation. For organizations focused on quality control, the standard may help support repeatable testing, better product comparisons, and lower risk in coated steel and iron material acceptance.
- Standardized coating mass test method
- Applicable to zinc and zinc-alloy coatings
- Supports quality control and acceptance checks
- Useful for coated iron and steel articles
- Helps improve testing consistency
- Publication Date: 2021-05-17
- Publisher: ASTM
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