Roughness comparison specimens:Part 2 Spark-eroded, shot-blasted and grit blasted, and polished

This specification defines a standardized reference material used for the visual and tactile assessment of surface roughness generated through specific manufacturing processes. The document focuses on comparative samples created via electrical discharge machining, shot peening, and polishing techniques. These physical artifacts serve as essential benchmarks for quality control personnel and inspectors within various industrial sectors. By providing tangible examples of surface finishes, the standard facilitates consistent evaluation and communication between suppliers and customers regarding surface texture requirements. The reference samples are prepared to represent typical roughness levels achievable through the aforementioned methods, ensuring that assessments are based on uniform criteria rather than subjective judgment. This approach supports uniformity in product specifications and helps maintain quality standards across different production environments without requiring complex instrumental measurement for every inspection. The content details the preparation and classification of these samples to ensure their reliability as a comparative tool in quality assurance procedures.