Stresses involved in Tests of Hardness, and a Table of the Comparative Hardness of Certain Metallic Elements

Abstract

IN NATURE of Jan. 23, 1926 (vol. 117, p. 117), I gave a description of a method of determining ‘Hardness,’ in which a cone of the material to be tested was pressed against a hard surface (sapphire), and the area of the flat thus formed at the point of the cone by the application of a known force was measured, the hardness being defined as applied force÷area… (More)
DOI: 10.1038/119276a0

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