Excerpt from The Design and Equipment of a Metallographic Polishing Machine: A Thesis
In the modern development of the iron and steel industry, the science of metallography along with that of chemistry has played a very important part. The work of the chemist would have been far less valuable without the additionai information given by the microscope. Given a piece of steel the chemist could quickly tell what its ultimate analysis might be. He could tell that it contained so much iron, so much carbon, and so much of other elements, but with regard to its ductility, its tensile strength, and its hardness he could say very little. Of the physical properties of metals which make them so important industrially, fully as much has been learned from the proximate structural analysis as revealed by the microscope as from the ultimate analysis of the chemist.
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