ASTM D1817 is a standard test method for rubber products. It specifies the determination of the specific gravity of raw or unvulcanised rubber.

The specific gravity of a rubber material is a physical property that provides valuable information about the composition and quality of the material. It is the ratio of the mass of a given volume of the material to the mass of an equal volume of distilled water at a specified temperature.

What is the procedure? ASTM D1817 involves measuring the mass of a sample of rubber material and then determining the volume of the sample by immersing it in a liquid displacement medium, typically water. The specific gravity is then calculated by dividing the mass of the sample by the volume displaced by the sample.

The test method specifies several variables that must be controlled during the test. These variables are the temperature and timing of the measurements, the cleanliness and temperature of the liquid displacement medium, and the size and shape of the sample.

HDA 120 complies with ASTM D1817 Standard.

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