Older versions of ASTM D2092 suggested allowing galvanized steel to weather outdoors for 6–12 months before painting. Modern revisions strongly discourage this because:

Instead, the current standard recommends immediate, controlled surface preparation.

If your job specification explicitly calls out "ASTM D2092," then yes, you must have the official PDF. No summary or online guide (including this one) replaces the exact wording, tables, and footnotes required for compliance.

Our recommendation: Purchase the single-user PDF directly from ASTM International. It costs roughly the same as one hour of shop labor but can save you from a failed adhesion test worth thousands of dollars.

Fact: Using a obsolete version (e.g., 1993) might recommend wash primers containing heavy metals like chromate, which are now banned for many applications by REACH, OSHA, or EPA regulations.