{"id":9382,"date":"2014-01-13T18:48:30","date_gmt":"2014-01-13T18:48:30","guid":{"rendered":"https:\/\/staging.asminternational.org\/hts-new\/results\/-\/journal_content\/56\/10192\/16860381\/NEWS\/"},"modified":"2023-02-07T04:50:05","modified_gmt":"2023-02-07T04:50:05","slug":"metlab-hardens-and-press-quenches-leaf-springs-for-1932-alfa-romeo","status":"publish","type":"post","link":"https:\/\/www.asminternational.org\/hts\/metlab-hardens-and-press-quenches-leaf-springs-for-1932-alfa-romeo\/","title":{"rendered":"Metlab hardens and press-quenches leaf springs for 1932 Alfa Romeo"},"content":{"rendered":"<p>\n\t<strong>Metlab, Philadelphia,<\/strong> recently heat-treated custom fabricated leaf springs of an antique 1932 Alfa Romeo sports car. The springs were fabricated for a Pennsylvania based automobile restorer. The leaf springs, made from HR-5160 steel, were patterned after the original springs, which were too worn to be reused. The replacement springs were hardened and press quenched into the shape of the spring, using a pencil-drawn template made from the originals. Then they were tempered to a final hardness of HRC 28\u201332, duplicating the hardness as measured on the samples.<\/p>\n<p>\n\tAnother recent project included the case hardening of reground lifters from a 1962 Rolls-Royce Silver Cloud engine. The lifters, which exhibited about 0.010-in. wear, were reground to make them all uniform in size. However, the grinding removed the hardened case, hence the lifters had to be recarburized and rehardened. As-measured surface hardness was HRC 62.<\/p>\n<p>\n\tIn addition, Metlab is often called upon to nitride O.E.M. as well as reground camshafts, crankshafts, and other engine components to restore these parts to original factory specifications. Camshafts are typically manufactured from 4140 or 4340 pre-heat-treated steel. This steel has a hardness of HRC 28 \u2013 32. Nitriding results in a surface hardness of HRC 60+ and a case depth of up to 0.020 in., providing significant wear protection for the cam lobes and gear teeth.<\/p>\n<p>\n\tIn addition to hardening and surface treatment services, Metlab offers cryogenic processing on automobile engine, transmission, and brake parts for improving their performance extending their useful life.<\/p>\n<p>\n\t<a href=\"http:\/\/blog.metlabheattreat.com\/posts\/#sthash.WmzQjWUK.dpuf\">http:\/\/blog.metlabheattreat.com\/posts\/#sthash.WmzQjWUK.dpuf<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Metlab, Philadelphia, recently heat-treated custom fabricated leaf springs of an antique 1932 Alfa Romeo sports car. The springs were made for a Pennsylvania-based automobile restorer. The leaf springs, made from HR-5160 steel, were patterned after the original springs, which were too worn to be reused. The replacement springs were hardened and press quenched into the shape of the spring, and were tempered to a final hardness of HRC 28\u201332, duplicating the hardness as measured on the originals.<\/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":[439,440,441,1],"tags":[],"class_list":["post-9382","post","type-post","status-publish","format-standard","hentry","category-general","category-news","category-news-articles","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Metlab hardens and press-quenches leaf springs for 1932 Alfa Romeo - Heat Treating Society<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.asminternational.org\/hts\/results\/-\/journal_content\/56\/10192\/16860381\/NEWS\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Metlab hardens and press-quenches leaf springs for 1932 Alfa Romeo - Heat Treating Society\" \/>\n<meta property=\"og:description\" content=\"Metlab, Philadelphia, recently heat-treated custom fabricated leaf springs of an antique 1932 Alfa Romeo sports car. The springs were made for a Pennsylvania-based automobile restorer. The leaf springs, made from HR-5160 steel, were patterned after the original springs, which were too worn to be reused. The replacement springs were hardened and press quenched into the shape of the spring, and were tempered to a final hardness of HRC 28\u201332, duplicating the hardness as measured on the originals.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.asminternational.org\/hts\/results\/-\/journal_content\/56\/10192\/16860381\/NEWS\/\" \/>\n<meta property=\"og:site_name\" content=\"Heat Treating Society\" \/>\n<meta property=\"article:published_time\" content=\"2014-01-13T18:48:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-02-07T04:50:05+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/16860381\\\/NEWS\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/16860381\\\/NEWS\\\/\"},\"author\":{\"name\":\"\",\"@id\":\"\"},\"headline\":\"Metlab hardens and press-quenches leaf springs for 1932 Alfa Romeo\",\"datePublished\":\"2014-01-13T18:48:30+00:00\",\"dateModified\":\"2023-02-07T04:50:05+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/16860381\\\/NEWS\\\/\"},\"wordCount\":254,\"publisher\":{\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/#organization\"},\"articleSection\":[\"general\",\"news\",\"News Articles\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/16860381\\\/NEWS\\\/\",\"url\":\"https:\\\/\\\/www.asminternational.org\\\/hts\\\/results\\\/-\\\/journal_content\\\/56\\\/10192\\\/16860381\\\/NEWS\\\/\",\"name\":\"Metlab hardens and press-quenches leaf springs for 1932 Alfa Romeo - 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