ASTM D2092 is the standard guide published by ASTM International (formerly the American Society for Testing and Materials). Its full title is: "Standard Guide for Preparation of Zinc-Coated (Galvanized) Steel Surfaces for Painting."
While the title specifies zinc-coated steel, newer revisions of the standard also provide critical guidance for preparing stainless steel surfaces for painting.
The standard was first published in 1962 and has undergone several revisions, with the most recent active versions being ASTM D2092 – 95 (2017) or later, depending on updates. Always check the ASTM website for the latest active version. astm d2092 pdf
Zinc-coated steel presents unique adhesion challenges:
ASTM D2092 provides the blueprint to solve these problems. By following this guide, manufacturers and coating contractors can: ASTM D2092 is the standard guide published by
Stainless steel is naturally corrosion-resistant due to its passive chromium oxide layer. However, that same layer makes it difficult for paint to stick. ASTM D2092 describes how to lightly abrade or chemically treat stainless steel to promote adhesion without destroying its corrosion resistance.
Fact: ASTM D2092 clearly states solvent cleaning removes oils but does NOT remove zinc corrosion products nor create a surface profile. Additional mechanical or chemical treatment is mandatory for durable paint adhesion. ASTM D2092 provides the blueprint to solve these problems
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