Brinell hardness test
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The Brinell hardness test measures the indentation hardness of materials. It determines hardness through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several
A hand-portable, hydraulic Brinell hardness tester
A close up image of the indenter of a Brinell hardness tester and an indentation
A Brinell calibration block used for the indirect verification of the accuracy of Brinell testing machines (photo courtesy of Foundrax Engineering Products).
An indentation in steel caused by a tungsten carbide sphere under 29,420 Newton load, showing the pile up around the indentation consisting of displaced material that has been forced sideways
Rhenium diboride
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Rhenium diboride is a synthetic high-hardness material that was first made in 1962. The compound is formed from a mixture of rhenium, noted for its resistance to high pressure, and boron, which forms
Brinell hardness test
…18–8 (304) stainless steel annealed 200 HB Quenched and tempered steel wear plate 400-700 HB Hardened tool steel 600–900 HB (HBW 10/3000) Glass 1550 HB Rhenium diboride 4600 HB Note: Standard test conditions unless otherwise stated Standards International (ISO) and European (CEN) Standard "EN ISO 6506-1:2014: Metallic…
Rhenium diboride, ReB2