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Contact SupplierIRHD hardness testers (IRHD = International Rubber Hardness Degree) determine the indentation depth of materials, from foams to rigid plastics and rubber.
A measure of the indentation resistance of elastomeric or rubber materials based on the depth of penetration of a ball indentor.
An initial contact force is applied to an indentor and the penetration is set to zero. The force is increased to a specified total load and the depth of penetration is measured. The IRHD value is related to the depth of indentor penetration.
IRHD Hardness Standards : ASTM D1415, DIN 53519 Sheet 2, ISO 48.