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DIN 53505

August 2000

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Shore A and Shore D hardness testing of rubber

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Superseded By: DIN ISO 7619-1

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ENGLISH * W/D S/S BY DIN ISO 7619-1, -2
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Description / Abstract:

This standard specifies the hardness testing of rubber test pieces and products. The hardness of a rubber is determined by its viscoelastic properties, particularly the elastic modulus as determined in DIN 53504. Type A durometers are suitable for testing in the hardness range from 10 to 90 Shore A, while type D durometers are to be used in the high hardness range.

The ball indentation method can be used for the middle hardness range, either using a 2,5 mm diameter ball as specified in DIN 53519-1 or - for softer test pieces - with a 5 mm diameter ball as specified in DIN EN ISO 2039-1. Test pieces which are too small to be tested as in DIN 53519-1 may be tested in accordance with DIN 53519-2.

An overview of the ranges of application for the different hardness testing methods is given in Appendix A.