{"id":2989,"date":"2021-04-20T13:52:00","date_gmt":"2021-04-20T13:52:00","guid":{"rendered":"https:\/\/www.alcoawheels.com\/north-america\/en\/blogs\/\/"},"modified":"2025-06-09T11:18:13","modified_gmt":"2025-06-09T15:18:13","slug":"the-impact-test-forged-alcoa-aluminum-wheel-vs-fabricated-steel-wheel-part-i","status":"publish","type":"post","link":"https:\/\/www.alcoawheels.com\/north-america\/en\/blogs\/the-impact-test-forged-alcoa-aluminum-wheel-vs-fabricated-steel-wheel-part-i\/","title":{"rendered":"The Impact Test: Forged Alcoa\u00ae\u00a0Aluminum Wheel vs. Fabricated Steel Wheel. Part I"},"content":{"rendered":"<div style=\"margin-top: 0px; margin-bottom: 0px;\" class=\"sharethis-inline-share-buttons\" ><\/div>\t\t<div class=\"wp-block-alcoa-wheels-social-share-dynamic\">\n\t\t\t<div class=\"social-share-main\">\n\t\t\t\t<div class=\"social-share-item with-icon\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/themes\/alcoa-wheels\/assets\/src\/images\/facebook.svg\" alt=\"Facebook Icon\" \/>\n\t\t\t\t\t<a class=\"facebook\" title=\"Facebook Icon\" aria-label=\"Facebook\" href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?text=The%20Impact%20Test:%20Forged%20Alcoa\u00ae\u00a0Aluminum%20Wheel%20vs.%20Fabricated%20Steel%20Wheel.%20Part%20I&#038;u=https:\/\/www.alcoawheels.com\/north-america\/en\/blogs\/the-impact-test-forged-alcoa-aluminum-wheel-vs-fabricated-steel-wheel-part-i\/\" onclick=\"window.open(this.href, 'Facebook', 'width=897, height=795, scrollbars, resizable'); return false;\"><\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"social-share-item with-icon\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/themes\/alcoa-wheels\/assets\/src\/images\/linkedin.svg\" alt=\"Linkedin Icon\" \/>\n\t\t\t\t\t<a class=\"linkedin\" title=\"LinkedIn Icon\" aria-label=\"Linkedin\" href=\"https:\/\/www.linkedin.com\/sharing\/share-offsite\/?url=https:\/\/www.alcoawheels.com\/north-america\/en\/blogs\/the-impact-test-forged-alcoa-aluminum-wheel-vs-fabricated-steel-wheel-part-i\/\" onclick=\"window.open(this.href, 'LinkedIn', 'width=570, height=278, scrollbars, resizable'); return false;\"><\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"social-share-item with-icon\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/themes\/alcoa-wheels\/assets\/src\/images\/x-twitter.svg\" alt=\"X Icon\" \/>\n\t\t\t\t\t<a class=\"twitter\" title=\"Tweet\" aria-label=\"X Icon\" href=\"https:\/\/twitter.com\/intent\/tweet?counturl=https:\/\/www.alcoawheels.com\/north-america\/en\/blogs\/the-impact-test-forged-alcoa-aluminum-wheel-vs-fabricated-steel-wheel-part-i\/&#038;text=The%20Impact%20Test:%20Forged%20Alcoa\u00ae\u00a0Aluminum%20Wheel%20vs.%20Fabricated%20Steel%20Wheel.%20Part%20I&#038;url=https:\/\/www.alcoawheels.com\/north-america\/en\/blogs\/the-impact-test-forged-alcoa-aluminum-wheel-vs-fabricated-steel-wheel-part-i\/&#038;via=Howmet\" onclick=\"window.open(this.href, 'Twitter', 'width=570, height=278, scrollbars, resizable'); return false;\"><\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"social-share-item with-icon\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/themes\/alcoa-wheels\/assets\/src\/images\/envelope.svg\" alt=\"Email Icon\" \/>\n\t\t\t\t\t<a class=\"email\" title=\"Email\" aria-label=\"Email Icon\" href=\"mailto:?subject=The%20Impact%20Test:%20Forged%20Alcoa\u00ae\u00a0Aluminum%20Wheel%20vs.%20Fabricated%20Steel%20Wheel.%20Part%20I&#038;body=To%20test%20the%20strength%20of%20a%20forged%20aluminum%20wheel%20versus%20a%20fabricated%20steel%20wheel,%20we%20recently%20conducted%20an%20impact%20test.%20Historically,%20these%20impact%20tests%20have%20been%20used%20to%20test%20cast%20aluminum%20wheels,%20for%20which%20they%20do%20not%20fare%20well.%20&nbsp;%20To%20best%20understand%20the%20results%20of%20the%20impact%20test,%20it%20is%20important%20to%20understand%20how%20%5B&hellip;%5D%0A%0Ahttps:\/\/www.alcoawheels.com\/north-america\/en\/blogs\/the-impact-test-forged-alcoa-aluminum-wheel-vs-fabricated-steel-wheel-part-i\/\" target=\"_blank\"><\/a>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"social-share-item with-icon\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/themes\/alcoa-wheels\/assets\/src\/images\/print.svg\" alt=\"Print Icon\" \/>\n\t\t\t\t\t<a class=\"print\" title=\"Print\" aria-label=\"Print Icon\" href=\"#\" onclick=\"window.print();\"><\/a>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer spacer-fifty\"><\/div>\n\n\n\n<p>To test the strength of a forged aluminum wheel versus a fabricated steel wheel, we recently conducted an impact test. Historically, these impact tests have been used to test cast aluminum wheels, for which they do not fare well. &nbsp;<\/p>\n\n\n\n<p>To best understand the results of the impact test, it is important to understand how wheels are made and understand both their characteristics and properties. &nbsp;<\/p>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-the-different-type-of-wheels-and-how-they-are-made\"><strong>The different type of wheels and how they are made:<\/strong><\/h5>\n\n\n\n<p>The following is background on the differences between various type of wheels and what sets each apart in the industry. Today, there are three different types of wheels on the market:<\/p>\n\n\n\n<div class=\"wp-block-alcoa-wheels-lists alcoa-wheels-lists-block\"><div class=\"list-wrapper\"><ol style=\"list-style-type:decimal\">\n<div class=\"wp-block-alcoa-wheels-list-items inner-list-item-wrapper  list-item-wrapper\"><li class=\"inner-list-item \"><span>Cast aluminum wheels<\/span><\/li><\/div>\n\n\n\n<div class=\"wp-block-alcoa-wheels-list-items inner-list-item-wrapper  list-item-wrapper\"><li class=\"inner-list-item \"><span>Fabricated steel wheels<\/span><\/li><\/div>\n\n\n\n<div class=\"wp-block-alcoa-wheels-list-items inner-list-item-wrapper  list-item-wrapper\"><li class=\"inner-list-item \"><span>Forged aluminum wheels<\/span><\/li><\/div>\n<\/ol><\/div><\/div>\n\n\n\n<p>A&nbsp;<strong>cast aluminum wheel<\/strong>&nbsp;is typically made of A356 aluminum alloy and manufactured similarly to Jell-o. A molten product is placed into a mold and following the process, creates a raw casting. It then goes through multiple, additional processes including an x-ray, which is most important. This is critical as the casting process contributes to porosities and inclusions that can be detrimental to the final product. Therefore, &nbsp;the x-ray process allows the operator to understand whether the porosity is the right size and in the right location so as not cause any issues. &nbsp;There are additional steps taken including running through a high temperature thermo process which allows the product\u2019s final strength to be achieved. Finally, it transitions to &nbsp;machining, and then ultimately to finishing which results in either the part being polished or painted.<\/p>\n\n\n\n<div id=\"columnsV1-7bbc2295-3f93-4cf5-98b0-be432bec4930\" class=\"wp-block-alcoa-wheels-columns-v1 columnsV1 fullwidthcontainer with-gap withOutBorder\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"361\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-1.jpg?w=450\" alt=\"impact-test-1\" class=\"wp-image-2992\" srcset=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-1.jpg 450w, https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-1.jpg?resize=300,241 300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/figure>\n\n\n\n<p><em>Forged aluminum wheel<\/em><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"361\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-2.jpg?w=450\" alt=\"impact-test-2\" class=\"wp-image-2993\" srcset=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-2.jpg 450w, https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-2.jpg?resize=300,241 300w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/figure>\n\n\n\n<p><em>Cast aluminum wheel<\/em><\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p>The making of a&nbsp;<strong>fabricated steel wheel<\/strong>&nbsp;is quite different. It begins with a blank of steel that is formed to the shape of the rim and follows the rim line. These wheels are not machined like the regular cast aluminum wheel, but rather formed. The center portion of the wheel goes through a press line, typically a transfer press, that punches out the holes necessary for the venting, the bolt hole, the center hole area, as well as the final shape of the center disk. Those two components are then welded together to create a two-piece wheel.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"573\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-3.jpg?w=576\" alt=\"impact-test-3\" class=\"wp-image-2994\" style=\"width:369px;height:376px\" srcset=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-3.jpg 576w, https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-3.jpg?resize=150,150 150w, https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-3.jpg?resize=300,298 300w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/figure>\n<\/div>\n\n\n<p>A forged aluminum wheel originates from the 6000 aluminum alloy series. It too is produced through a unique process that starts with a solid piece of aluminum cut to the specific weight necessary for the final forging. It then continues to a pre-heat process that takes it up to a temperature allowing it to be formed in the forged press. Once it finishes forging process, it is machined and polished.<\/p>\n\n\n\n<figure class=\"wp-block-image alignfull size-large\"><img loading=\"lazy\" decoding=\"async\" height=\"607\" width=\"1024\" src=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-4.jpg?w=1024\" alt=\"impact-test-4\" class=\"wp-image-2995\" srcset=\"https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-4.jpg 1329w, https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-4.jpg?resize=300,178 300w, https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-4.jpg?resize=768,455 768w, https:\/\/www.alcoawheels.com\/north-america\/en\/wp-content\/uploads\/sites\/27\/2023\/07\/impact-test-4.jpg?resize=1024,607 1024w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer spacer-fifty\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\" id=\"h-results-of-the-impact-test\"><strong>Results of the Impact Test:<\/strong><\/h5>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer spacer-fifty\"><\/div>\n\n\n\n<div class=\"wp-block-alcoa-wheels-youtube-video youtube-video-main\"><div class=\"youtube-Videos container\"><div class=\"youtube-Videos-item\"><div class=\"videoWrapper privacyEnable\"><div class=\"onetrust-placeholder\"><p class=\"onetrust-message text-center vertical-center\"><span class=\"onetrust-unavailable-notice\">This content requires certain cookies to function. Please <a class=\"optanon-toggle\">accept<\/a> cookies in order to continue. You may need to refresh your browser window afterwards.<\/span><\/p><\/div><div class=\"youtube-video-wrapper\"><iframe data-src=\"\/\/www.youtube.com\/embed\/8gOiDhWRW2s?rel=0\" class=\"youtube-iframe\" title=\"video\"><\/iframe><\/div><\/div><\/div><\/div><\/div>\n\n\n\n<p>To learn more about the differences between forged aluminum wheels and fabricated steel wheels, read the blog&nbsp;<a href=\"\/north-america\/en\/blogs\/in-2021-lighter-aluminum-wheels-still-outweigh-steel\/\">Aluminum vs. Steel Wheels: An Age-Old Debate<\/a>.<\/p>\n\n\n\n<p><strong>Be sure to visit our&nbsp;<a href=\"\/north-america\/en\/releases\">Expert Insights Blog&nbsp;<\/a>and look out for our next post addressing the characteristics and properties of these different types of wheels.<\/strong><\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer spacer-fifty\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>To test the strength of a forged aluminum wheel versus a fabricated steel wheel, we recently conducted an impact test. Historically, these impact tests have been used to test cast aluminum wheels, for which they do not fare well. &nbsp; To best understand the results of the impact test, it is important to understand how [&hellip;]<\/p>\n","protected":false},"author":44,"featured_media":2996,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"protected_reviewer_email":"","editor_notices":[],"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2989","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>The Impact Test: Forged Alcoa\u00ae Aluminum Wheel vs. Fabricated Steel Wheel. 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