{"id":8832,"date":"2016-04-22T14:51:18","date_gmt":"2016-04-22T14:51:18","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts-new\/results\/-\/journal_content\/56\/10192\/26270338\/NEWS\/"},"modified":"2023-02-07T04:49:21","modified_gmt":"2023-02-07T04:49:21","slug":"one-minute-mentor-carburizing-tool-steels","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/hts\/one-minute-mentor-carburizing-tool-steels\/","title":{"rendered":"One Minute Mentor: Carburizing Tool Steels"},"content":{"rendered":"<p>\n\tP20 mold steel is seldom carburized for molds used in compression molding, particularly for molding the more abrasive plastics. Carburizing temperatures no higher than 1650\u00b0F are recommended for this steel because higher temperatures may impair polishability; otherwise, conventional carburizing practice is used, and molds may be quenched in oil directly from the carburizing temperature. A common working range is 54 to 58 HRC.<\/p>\n<p>\n\t<span style=\"line-height: 1.4;\">The graph shows tempering characteristics of carburized mold steels.<\/span><\/p>\n<p>\n\t(a)&nbsp;&nbsp; Upper curve represents steel carburized in hardwood charcoal 1675 to 1700\u00b0F for 8 hours, air cooled in pack, reheated at 1725 to 1750\u00b0F, cooled in air, and tempered. Middle curve represents steel carburized in cast iron chips at 1725 to 1750\u00b0F, removed from pack, cooled in air, and tempered.<\/p>\n<p>\n\t(b)&nbsp;&nbsp; Surface hardness after heating at temperature for 2 hours in carburizing compound, followed by oil quenching and tempering.<\/p>\n<p>\n\t<span style=\"line-height: 1.4;\">Volume 4D, <em>Heat Treating of Irons and Steels<\/em><\/span><span style=\"line-height: 1.4;\">&nbsp;<\/span><span style=\"line-height: 1.4;\">?<\/span><span style=\"line-height: 1.4;\">&nbsp;Tool Steels&nbsp;<\/span><span style=\"line-height: 1.4;\">?<\/span><span style=\"line-height: 1.4;\">&nbsp;<\/span><span style=\"line-height: 1.4;\">Heat Treating of Mold Steels and Corrosion-Resistant Tool Steels<\/span><span style=\"line-height: 1.4;\">&nbsp;<\/span><span style=\"line-height: 1.4;\">?<\/span><span style=\"line-height: 1.4;\">&nbsp;Recommended Heat Treating Practices<\/span><\/p>\n<p>\n\t&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>P20 mold steel is seldom carburized for molds used in compression molding, particularly for molding the more abrasive plastics.<\/p>\n","protected":false},"author":63082,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[472,439,485,440,441,483,493,1],"tags":[],"class_list":["post-8832","post","type-post","status-publish","format-standard","hentry","category-carburizing-and-carbonitriding","category-general","category-hardness-and-hardenability","category-news","category-news-articles","category-quenching","category-surface-hardening","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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