Rubber Hardness Measurement

The measurement must be redone with adjacent scale type.

Rubber hardness measurement.

Generally most rubber materials fall under the rubber durometer scale of shore a. 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. Measuring by pressing manually onto a rubber part in order to feel its resistance can seam. A durometer scale is a type of measurement for rubber material hardness.

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. The hardness has a direct impact on the stiffness of a part ultimately affecting how a component will perform in an application. Shore durometer hardness is a measure of the resistance a material has to indentation. 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 most commonly used method is the shore a measurement. The needle is placed against the rubber or plastic and pressure is applied. So i sent him photographs that showed different ways of holding a durometer and using it to measure the hardness of a rubber roll.

Otherwise deviations can easily occur on a convex surface. This measurement follows the. What shore hardness means to you as a mold maker. There are special tools to position the measuring needle exactly in the middle.

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. But if the hardness is 10 sh or 90 sh the results are not to be trusted. The irhd m measurement is particularly common for measurements on o rings. Thus if you need a rubber or o ring durometer that feels like a running shoe.

This comparison guide will provide an overview of the different scales that can be used. To evaluate elastomers quality vulcanisation ratio or even the wear resistance it is necessary to check the hardness.