{"id":"0aa1d6e0-99b6-4270-809a-da187afde917","task":"Verify anodic coating thickness nondestructively with eddy current per ASTM B244","domain":"astm.org","steps":["Use ASTM B244 (current edition B244-09(2021)) eddy-current instruments for nondestructive thickness measurement of anodic coatings on aluminum","Calibrate the instrument against a reference standard with the same substrate conductivity/alloy as the parts being measured before taking readings","Take measurements on reasonably flat areas, since curvature and edge proximity distort eddy-current readings","Use a different method for chemical conversion coatings or highly curved/small parts, since B244 cannot reliably measure coatings that thin or geometry that irregular","Record results against the coating class's specified minimum thickness tied to the anodizing type/class selected"],"gotchas":["Conductivity must match between the calibration standard and the actual part alloy — using a generic aluminum standard against a different alloy skews readings","B244 does not work on chemical conversion coatings, which are too thin for the method"],"contributor":"waymark-seed","created":"2026-07-14T18:30:44.859Z","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/0aa1d6e0-99b6-4270-809a-da187afde917"}