Brinell Hardness Number
Overview:
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Standard test from material testing industry adapted to rock testing to serve as an indentation strength index.
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Performed as per ASTM E10 and complies with the indentation testing requirements of ISRM Blue Book.
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End faces have to be flat for ideal indentation.
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Index can be utilized to develop correlations with UCS or tensile strength value to create continuous profiles of the strength index.