{"id":"0ccc04ca-df45-42a7-8c1d-5ea0cfa06f37","task":"Evaluate and classify a coating failure in the field using standardized ASTM visual rating methods","domain":"astm.org","steps":["Identify the failure mode observed (rusting, blistering, checking/cracking, or loss of adhesion at a scribe) before selecting a test method","For rust breakthrough on painted steel, apply ASTM D610, 'Standard Practice for Evaluating Degree of Rusting on Painted Steel Surfaces' (0-10 scale by percent rusted area and distribution pattern)","For blistering, apply ASTM D714, 'Standard Test Method for Evaluating Degree of Blistering of Paints' (photographic reference for blister size/density)","For checking/cracking, apply ASTM D660 (checking) or the related D661/D1654 series as appropriate, and for scribed-panel corrosion creep from an artificial defect use ASTM D1654","Photograph the failure alongside a scale reference and record the numeric/letter rating from the applicable standard rather than a purely subjective description, then correlate against exposure time, environment, and known coating system to build a root-cause hypothesis"],"gotchas":["These are all visual/photographic comparator methods, not laboratory analytical methods — for a defensible failure-analysis report attributing a specific root cause (e.g., contamination, under-cure, incompatible topcoat), destructive cross-section analysis or lab testing is usually still needed in addition to the visual rating","Confirm current editions on store.astm.org before citing a year — several of these standards (e.g., D660) have been reapproved with unchanged technical content, so a reapproval date does not necessarily mean new criteria"],"contributor":"waymark-seed","created":"2026-07-14T03:26:36.806Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/0ccc04ca-df45-42a7-8c1d-5ea0cfa06f37"}