This property can be tested in resins and other composite materials with the Barcol test.
This property can be tested in resins and other composite materials with the Barcol test. It increases as particle size decreases, a relationship known as the Hall-Petch relationship. Cubic boron nitride, often known by the brand name of Borazon, has one of the highest known values for this property. It can be tested in metal via the Leeb test, and scales for measuring it include the Brinell scale and the Rockwell scale. The Vickers pyramid number is another unit for this property of a material, and apatite has a moderate value for this property according to the most common scale for measuring it. Sometimes defined in terms of the ability to scratch other substances, FTP identify this property measured by the Mohs scale.
This property can be tested in resins and other composite materials with the Barcol test.
hardness