Graphic Durometer Hardness Reference Chart
The following chart is a visual representation of the Shore Hardness Scales, which should be used for comparison purposes only and not as a conversion chart, showing how the softest formulation of Americule Impact Material (AIM™) is considerably softer than gummy bear candies and the range that AIM™ can be molded.
*Durometer readings were measured at 78-degrees F and are +/- 5, Rebound is measured as the distance a 12-pound, 60D urethane ball bounced off a 1/2-inch sheet of AIM™ from 2 meters with a concrete floor, also at 78-degrees F.
Technical Hardness Information Text
The Shore durometer is a device for measuring the hardness of a material, often that of polymers, elastomers, and rubbers. The higher the number the greater resistance the material has to indentation, therefore harder. The smaller the number the softer the material.
ASTM D2240-00 testing standards call for 12 scales, depending on the intended use. Types include: A, B, C, D, DO, E, M, O, OO, OOO, OOO-S and R. A standard hard hat is considered extra hard and has a durometer of 80D, while a medium hard auto tire is a Shore 70A. A rubber band is just under 50 on the Shore OO scale, and AIM™ ranges from the softest at 22-OOO up to 50-OO.
A durometer reading under 20 is considered inaccurate, which is why the AIM™ formulations below 20 on the OO scale, are measured on the OOO scale.
Americule Impact Material (AIM™):
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