Durometers are featured for hardness testing of elastomers/plastics.

Shore durometers for hardness testing of elastomers and plastics are featured in this 20-page, four-color brochure. Shore durometers conform to all ASTM and international standards and are said to be easy to use.

This brochure contains durometers and durometer systems that cover the entire spectrum of indentation hardness testing of rubber-like materials. Each durometer type is made to a specific scale (i.e., A, B, C, D) and is capable of producing a value between zero and 100.

For M scale testing, the company manufactures the micro system, which is designed to determine the hardness of soft elastomers too thin or too irregularly shaped, such as small o-rings, for measurement with macro durometers.

All durometers, except for the M scale units, can be used as a portable device. Test stands are recommended for best accuracy and are required for M scale testing due to its increased sensitivity.

The Shore test uses a hardened indenter, an accurately calibrated spring, a depth indicator and a flat presser foot. The indenter protrudes from the middle of the presser foot and extends 2.5 mm from the surface of the foot.

In the fully extended position, the indicator displays zero. When the indenter is depressed flat, even with the presser foot's surface, the indicator displays 100. Therefore, every Shore point is equal to 0.0025 mm penetration (M scale is 0.00125 mm).

To perform a test, the unit is placed on the sample so that the presser foot is held firmly against the test surface. The spring pushes the indenter into the sample and the indicator displays the depth of penetration.

Instron

Circle 119 on card