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A hardness tester (or durometer) is a measuring instrument designed to determine a material's resistance to permanent plastic deformation (such as penetration, scratching, or indentation) caused by a harder object. In the technical and quality control industries, it is a fundamental tool for verifying that materials (metals, plastics, or rubbers) meet manufacturing specifications.
How does it work? It works by applying a specific load to the material's surface using an indenter (which can be a diamond tip or a steel ball). The hardness value is calculated based on the depth or size of the indentation left.
There are different scales depending on the material: 1. Rockwell (HRC/HRB): The most common for metals and steels. 2. Brinell (HB): For materials with a rougher internal structure or castings. 3. Vickers (HV): Ideal for thin sheets or small, high-precision parts. 4. Shore: Specifically for plastics, rubbers, and elastomers.
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