The DIN ISO 48 standard outlines the procedure for performing a Shore A hardness test, which measures the resistance of a rubber material to indentation. The test involves applying a defined force to a standardized indenting tool and measuring the depth of the resulting indentation. The Shore A hardness value is then calculated based on the depth of the indentation. The specimen should be a flat and uniform piece of rubber or elastomer material. The specimen thickness should be at least 6 mm (0.24 in) and should be sufficient to allow the indenting tool to penetrate the surface without bottoming out on the support surface. The Shore A durometer used for testing should be calibrated before the test to ensure accurate and consistent results. The hardness value is reported in Shore A units, which range from 0 to 100. A higher Shore A value indicates a harder material, while a lower value indicates a softer material.

NextGen’s HDA 120 – Hardness and Density Automation Test System complies with DIN ISO 48 standard.

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