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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

Martempering of Steels[1]

By
Lauralice de C.F. Canale
Lauralice de C.F. Canale
Revising author
University of São Paulo (Brazil)
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Jan Vatavuk
Jan Vatavuk
Revising author
Presbiterian University Mackenzie (Brazil)
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George E. Totten
George E. Totten
Revising author
Portland State University
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Published:
2013
Page range:
362 - 381
Publication history
July 23, 2013

Abstract

This article describes the advantages of martempering and the use of oil and salt as quenchants in the martempering process. It also discusses safety precautions to be followed by an operator and reviews the steels that are suitable for martempering. The article provides information on the importance of controlling process variables in martempering, including austenitizing temperature, temperature of the martempering bath, time in the bath, salt contamination, water additions to salt, agitation, and the rate of cooling from the martempering bath. It also describes specific situations in which distortion problems have been encountered during martempering. The article contains tables that indicate typical applications of martempering in salt and oil by listing commonly treated steel parts and giving details of martempering procedures and hardness requirements. The article also lists equipment requirements for oil and salt martempering of steel.

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Lauralice de C.F. Canale, Jan Vatavuk, George E. Totten, 2013. "Martempering of Steels", Steel Heat Treating Fundamentals and Processes, Jon L. Dossett, George E. Totten

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