Hardness
From Plastics Wiki, free encyclopedia
Hardness The resistance to surface indentation usually measured by the depth of penetration of a blunt point under a given load using a particular instrument according to a prescribed procedure.
Hardness testing has a lot of factors to consider in order to get good, reliable results. The test methods can be very sensitive given the delicate balance of forces involved. To provide some perspective, the Rockwell hardness test is like a giant micrometer that gets closed with 150 kg of force and yet measures accurately in the micron range. Seemingly inconsequential factors can have a large impact.
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Links
- See TianXing Hardness testers for more on this.
