DIN 53505 Standard

07.06.2023

What does the standard define?

The DIN 53505 standard precisely defines the hardness of materials such as natural and synthetic rubber, polyester, thermoplastics, and PVC. The hardness of rubber is measured based on its viscoelastic properties — its ability to deform elastically (reversibly) and plastically (irreversibly) under external forces.

Shore Durometer

The hardness is tested using a Shore durometer. This device measures the material’s strength using a specific scale (e.g., A or D) ranging from 0 to 100. A Type A durometer is typically used to measure the hardness of elastomers and rubber-like materials.

What is the Shore Hardness Scale?

It is a method for determining the hardness or flexibility of various materials and plastics. DIN 53505 uses Shore A and D scales. Type A durometers are used for the range of 10 to 90 Shore A, while Type D devices are used for testing harder materials.

DIN 53505

DIN 53505

ISO Standards 7619-1 and 7619-2

DIN 53505 has been replaced by ISO standards 7619-1 and 7619-2. Both standards are used to determine the relative Shore hardness of plastics. ISO 7619-1 specifies indentation hardness of vulcanized or thermoplastic rubber using a durometer. ISO 7619-2 describes testing using a pocket durometer for quality control, not for specification.

Power Rubber offers high-quality rubber products. In our store, you’ll find a wide selection of rubber components compliant with DIN 53505. If you have any questions, feel free to contact us.

 

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