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ASM Handbook

Steel Heat Treating Fundamentals and Processes

Edited by
Jon L. Dossett
Jon L. Dossett
Consultant
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George E. Totten
George E. Totten
Portland State University
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ASM International
Volume
4A
ISBN electronic:
978-1-62708-165-8
Publication date:
2013
Book Chapter

Methods of Measuring Case Depth in Steels

By
William J. Bernard, III
William J. Bernard, III
Revising author
Surface Combustion, Inc.
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Published:
2013
Page range:
405 - 416
Publication history
July 23, 2013

Abstract

Case depth is the normal distance from the surface of the steel to the start of the core. Measurement of case depth is highly sensitive to the type of case hardening, original steel composition, quenching condition, and even to the testing method. This article describes the various methods of measuring case depth in steels, including chemical methods such as the combustion analysis and spectrographic analysis, microhardness test method, macroscopic and microscopic visual methods, and nondestructive methods. It contains a table that provides approximate equivalent hardness numbers for steel.

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William J. Bernard, III, 2013. "Methods of Measuring Case Depth in Steels", Steel Heat Treating Fundamentals and Processes, Jon L. Dossett, George E. Totten

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