The 2012 revisions have not changed either standard's existing requirements for surface cleanliness and minimum surface profile. Revisions made to language common to both standards includeJournal of Protective Coatings &Linings GroupJournal of Protective Coatings & Linings...
They reflect similar permissible levels of stains and tightly-adhered rust, mill scale and coatings, and can be summed up with a chart: *Estimated surface area. ISO 8501-1 is a visual reference and does not explicitly state percentages. The specifications specifically mention stains, s...