Shore hardness tester

Shore hardness testers are non-destructive testing instruments employed to measure hardness. To make a detection of material hardness, hardness tester must perform on it a penetration, thus leaving an imprint on the point tested (called witness).

These devices are employed to measure hardness of rubber, plastic, sponges and similar mediums. Shore A scale is widely used in measuring thermoplastic elastomers hardness. A zero reading means the penetrator reached its max depth in the material, while a 100 reading shows a lack of indentation in the sample. Over 90 shore A readings, it’s suggested to employ shore D hardness tester, equipped with a sharper penetrator. Below 5 shore A readings it’s suggested to employ a shore E hardness tester. Shore A is employed to measure hardness of soft materials such as rubber, elastomers, and other rubbery materials like neoprene, silicone and vinyl. It can be used also for soft plastics, felt, leather and similar materials. Shore E is used to measure materials such as sponges and foam; Shore D is used to measure materials such as plastic, Formica, epoxides and Plexiglas.

Shore hardness testers are suitable in quality control activities in rubber and plastics industries and in maintenance checks on ring nuts and gaskets.

They comply with Standards DIN53505, ASTM D2240, ISO7619, JIS K7215.

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