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Technologic Papers of the Bureau of Standards : Influence of Phosphorus Upon the Micro-Structure Structure and Hardness of Low-Carbon, Open-Hearth Steels, November 21, 1921, PDF eBook

Technologic Papers of the Bureau of Standards : Influence of Phosphorus Upon the Micro-Structure Structure and Hardness of Low-Carbon, Open-Hearth Steels, November 21, 1921 PDF

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The nine specimens, one from each Of the steels in both the B.

O. H. And A. O. H. Series for each heating, were fastened three in a row to a piece Of rather coarse iron Wire gauze, which was wrapped around the pyrometer tube at the closed end in such a way that the' three rows of specimens-were placed approximately equidistant around the outer circumference Of and in contact with the pyrometer tube and also so that the hot junction of the chrome] alumel thermocouple, used in conjunction with a millivoltmeter, was approximately centrally located within the cluster of the nine specimens.

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