The hardness of metals and its measurement

The hardness of metals and its measurement

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ABSTRACT ALTHOUGH the hardness of a substance is not a physical constant, and cannot be expressed as a function of known physical constants, the idea of hardness is a familiar one, and empirical determinations of hardness play a great part in the study of materials. Methods depending on scratching now take only a subordinate place, and ‘resistance to indentation’ is the most generally accepted definition of hardness. The Brinell test, in which a hard ball is pressed into the object under a known load, forms the basis of most hardness testing, but the introduction of the diamond pyramid, as in the Vickers test, in place of a steel ball, has given greater precision to the test. The Hardness of Metals and its Measurement By Dr. Hugh O'Neill. Pp. xiv + 292 + 24 plates. (London: Chapman and Hall, Ltd., 1934.) 25_s_. net. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support Authors * C. H. D. View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE D., C. The Hardness of Metals and its Measurement. _Nature_ 136, 415 (1935). https://doi.org/10.1038/136415c0 Download citation * Issue Date: 14 September 1935 * DOI: https://doi.org/10.1038/136415c0 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative

ABSTRACT ALTHOUGH the hardness of a substance is not a physical constant, and cannot be expressed as a function of known physical constants, the idea of hardness is a familiar one, and


empirical determinations of hardness play a great part in the study of materials. Methods depending on scratching now take only a subordinate place, and ‘resistance to indentation’ is the


most generally accepted definition of hardness. The Brinell test, in which a hard ball is pressed into the object under a known load, forms the basis of most hardness testing, but the


introduction of the diamond pyramid, as in the Vickers test, in place of a steel ball, has given greater precision to the test. The Hardness of Metals and its Measurement By Dr. Hugh


O'Neill. Pp. xiv + 292 + 24 plates. (London: Chapman and Hall, Ltd., 1934.) 25_s_. net. Access through your institution Buy or subscribe This is a preview of subscription content,


access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn


more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS


OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support Authors * C. H. D. View author publications You can also search for this author


inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE D., C. The Hardness of Metals and its Measurement. _Nature_ 136, 415 (1935).


https://doi.org/10.1038/136415c0 Download citation * Issue Date: 14 September 1935 * DOI: https://doi.org/10.1038/136415c0 SHARE THIS ARTICLE Anyone you share the following link with will be


able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing


initiative