Brinell hardness test

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Bri·nell hard·ness test

(bri-nel hahrdnĕs test)
Common dental measurement to determine hardness of ductile materials (e.g., metals). A hardened steel ball of specific diameter is pressed into the polished surface of the material under a specified load. The result, determined from the area of the surface of the indentation, is an index of hardness (e.g., Brinell hardness number).
References in periodicals archive ?
On the Brinell Scale of increasing hardness from 200 BHN A-R steel through 800 BHN cast iron, the pipe's inner surface at 600 BHN can withstand most common abrasives and tapers to a 250 BHN outer surface able to accommodate handling, installation and maintenance.
By this graph, pure lead will rate a "0" on the Saeco scale and correspond to a "3" to "5" on the Brinell scale.
The process of ongoing improvement is also true for SSAB, and Yalcin notes that when the steel producer started out with Hardox, it had a hardness of 400 on the Brinell scale - but as research and development have continued that upper value has risen - to 600 and even to 700 today with Hardox Extreme.
The system is capable of measuring all Rockwell, Rockwell Superficial, Vickers and Brinell scales, and is said to meet or exceed all major industry standard requirements, including those for ASTM, ISO and Direct NIST traceability, according to the manufacturer.