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1942 tool steel treaters guide bethlehem steel booklet
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TOOL STEEL TREATER'S GUIDE - A 1942 BOOKLET FROM BETHLEHEM STEEL..BOOKLET 148-B
Light green soft cover booklet with black lettering on the front cover. Issued in 1942 by the Bethlehem Steel Company, Bethlehem, Pennsylvania. Illustrated. 116 pages.
From Wikipedia: "Tool steel refers to a variety of carbon and alloy steels that are partucularly well-suited to be made into tools. Their suitability comes from their distinctive hardness, resistance to abrasion, their ability to hold a cutting edge, and/or their resistance to deformation at elevated temperatures (red-hardness). Tool steel is generally used in a heat-treated state."
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