Sa 2.5 Sand Blast Finish: Clear ISO 8501 Guide

Summary for sa 2.5 sand blast finish Discussion

Sa 2.5 sand blast finish is essentially a cleanliness check, not just a visual roughness check. Vinod Kumar Gupta asked what should be inspected to certify that a sandblasted metal surface conforms to Sa 2.5. R. Green replied that the relevant standard is ISO 8501, Part A1, and that the inspection should focus on the cleanliness of hot rolled steel after blast cleaning before protective treatments are applied. The thread does not list detailed acceptance criteria, but it points the reader to the ISO 8501 standard as the basis for certification. In practice, the key issue is whether the blasted surface is clean enough for coating or other protective treatment, rather than simply whether blasting was performed. Because only one answer is given, there is no disagreement in the thread.