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Relation of the High-temperature Treatment of High-speed Steel to Secondary Hardening and Red-hardness

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Book Id: WPLBN0003093933
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Reproduction Date: 2011

Title: Relation of the High-temperature Treatment of High-speed Steel to Secondary Hardening and Red-hardness  
Author:
Volume: Volume: Scientific Papers of the Bureau of Standards, Vol. 16, 521-536 (1920) Scientific Paper 395 (S395)
Language: English
Subject:
Collections: Periodicals: Journal and Magazine Collection, Periodicals: Journal and Magazine Collection
Historic
Publication Date:
1920
Publisher: National Bureau of Standards

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Relation of the High-temperature Treatment of High-speed Steel to Secondary Hardening and Red-hardness. (1920). Relation of the High-temperature Treatment of High-speed Steel to Secondary Hardening and Red-hardness. Retrieved from http://kindle.worldlibrary.net/


Description
Description: The work was carried out on a steel of the following percentage composition: C, 0.77; W, 17.8; Cr, 3.5; V, 0.74. The best magnetic results were obtained after quenching in oil, from 1050°C., when H/sub c/ = 70, B/sub rem./ = 6300, and B/sub max./ = 9100. By subsequent immersion in liquid air B/sub rem./ and B/sub max./ rose to 6700 and 9300 respectively. The Brinell and scleroscope hardness attained the max. value for steel quenched about 1070°C., and the highest density when quenched from 1230°C. The steels quenched in the region of 1050°C. tended to crack badly. Steels quenched from 1220° and 1300°C. showed a distinct increase in hardness on being tempered from 400° to 650°C., which wa

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