Rubber Hardness Measurement

Durometer is a dimensionless quantity and there is no simple relationship between a material s durometer in one scale and its durometer in any other scale or by any other hardness test.

Rubber hardness measurement.

In order to measure hardness a rubber hardness scale is used. Once the gauge is pressed firmly against the material and the needle has penetrated as far as it can go the measurement needle will indicate the corresponding hardness measurement. The hardness has a direct impact on the stiffness of a part ultimately affecting how a component will perform in an application. High quality foam rubber hardness shore durometer measurement 2 5 mm needle stroke dial from china china s leading digital rubber hardness tester product with strict quality control durometer hardness unit factories producing high quality durometer hardness unit products.

As such an incorrect way to take a measurement of hardness would be if the base of the durometer or the base of the tool was actually not parallel to the axis of the roll or the shaft that s holding the roll. This comparison guide will provide an overview of the different scales that can be used. The measurement must be redone with adjacent scale type. Generally most rubber materials fall under the rubber durometer scale of shore a.

This measurement follows the. To evaluate elastomers quality vulcanisation ratio or even the wear resistance it is necessary to check the hardness. Thus if you need a rubber or o ring durometer that feels like a running shoe. Named after its inventor albert ferdinand shore shore hardness offers different scales for measuring the solidity of different materials shore was born in 1876 and lived until 1936 creating the shore scale in the 1920s.

Measuring by pressing manually onto a rubber part in order to feel its resistance can seam. Otherwise deviations can easily occur on a convex surface. The rubber durometer chart below gives you an idea of the rubber hardness that you want for your application. Determining the shore a hardness of rubber.

The irhd m measurement is particularly common for measurements on o rings. There are special tools to position the measuring needle exactly in the middle. The needle is placed against the rubber or plastic and pressure is applied. The most commonly used method is the shore a measurement.

But if the hardness is 10 sh or 90 sh the results are not to be trusted. A durometer scale is a type of measurement for rubber material hardness.