{"id":864,"date":"2026-06-11T09:18:22","date_gmt":"2026-06-11T09:18:22","guid":{"rendered":"https:\/\/www.wudejiansteel.com\/?p=864"},"modified":"2026-06-11T09:18:22","modified_gmt":"2026-06-11T09:18:22","slug":"an-aluminum-forming-plant-has-once-again-purchased-90-pieces-of-high-toughness-lg-die-steel-from-yuhui-blog-163","status":"publish","type":"post","link":"https:\/\/www.wudejiansteel.com\/?p=864","title":{"rendered":"An aluminum forming plant has once again purchased 90 pieces of high-toughness LG die steel\u00a0from Yuhui.blog\u00a0163"},"content":{"rendered":"\n

I saw these 90 pieces of machined, high-toughness LG die\u00a0steel<\/a><\/strong>\u00a0blanks in the workshop, ready for shipment. I\u2019m in a good mood, so I wanted to share this with everyone.<\/p>\n\n\n\n

\u00a0This customer manufactures cold-extruded, shaped, and bent aluminum products. Previously, they used Cr12MoV<\/a> <\/strong>and SKD11, both of which were prone to sticking to aluminum shavings, resulting in scratches on the products. Since these are cosmetic parts with extremely strict appearance requirements, any scratches render the products scrap\u2014and given the high volume of production, this was a major issue. The scratches caused by Cr12MoV and SKD11 were a persistent problem he\u2019d struggled with for a long time.<\/p>\n\n\n\n

 He had considered coating or laminating the Cr12MoV, but none of these methods worked; the tools still adhered to aluminum shavings, causing scratches on the products, and the problem remained unsolved. However, three years ago, he began using Yuhui\u2019s high-toughness LG die steel<\/strong>, which resolved this issue. As a result, he now frequently places bulk orders; this time, he purchased 90 pieces, and this is just one of his many orders.<\/p>\n\n\n\n

 The fact that the customer is able to make frequent, large-volume purchases demonstrates his recognition of LG\u2019s performance and quality. LG has solved the problem of scratches in his aluminum forming dies.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Just recently, another customer\u2014who uses 6061 aluminum forming dies\u2014encountered issues where H13 die plates would collapse, resulting in products with improper dimensions and appearance. Using DC53, on the other hand, led to frequent mold cracking. Even after reducing the hardness to 52\u201354 HRC, the mold life remained unstable\u2014sometimes lasting 10,000 to 20,000 cycles, other times cracking after just a few thousand cycles. He asked me what the cause might be.<\/p>\n\n\n\n

 Aluminum is very soft and tends to penetrate the mold, especially at the fillet corners, where it can seep in and eventually cause the mold to split. DC53 is a high-carbon steel with a carbon content of 1.0%. High-carbon steels tend to have a very fine grain structure, containing numerous microscopic cracks invisible to the naked eye. When aluminum powder is encountered during the forming and extrusion process, aluminum debris adheres to the mold. This not only causes surface scratches on the product but also allows aluminum debris to seep into the R-corners. As the debris accumulates, it eventually causes the mold to split.<\/p>\n\n\n\n

 Many people mistakenly believe that mold cracking is solely due to poor toughness and that reducing hardness will solve the problem. They lower the hardness of DC53 from 60\u201362 HRC to 52\u201354 HRC, thinking this will improve toughness. In reality, this does nothing to extend the mold\u2019s service life; it is merely a psychological placebo. The fact that their molds sometimes crack after just a few thousand cycles, and other times after 10,000 to 20,000 cycles, demonstrates this inconsistency in service life. With H13, the strength is too low, causing the mold to deform and resulting in products with non-conforming dimensions after trimming. This indicates that for his molds, toughness should be the top priority, followed by strength; such molds are better suited for high-toughness LG <\/strong>die<\/strong> steel<\/strong>.<\/p>\n\n\n\n

 LG mold steel has 8\u20139 times the toughness of DC53, with a hardness of 54\u201358 HRC. Its toughness is so high that it won\u2019t break even if you bend it with a hammer. If your aluminum profile forming dies, bending dies, or cold extrusion dies are experiencing issues such as aluminum swarf sticking, product scratches, or poor toughness leading to breakage\u2014or if you\u2019re using other die steels with short service life\u2014you should also try high-toughness LG die steel<\/strong>.<\/p>\n\n\n\n

 *************<\/p>\n\n\n\n

Wu Dejian’s\u00a0tool\u00a0steel<\/a><\/strong>, the chief of staff of the user, bought everything he had used.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

I saw these 90 pieces of machined, high-toughness LG die\u00a0steel\u00a0blanks in the workshop, ready for shipment. I\u2019m in a good mood, so I wanted to share this with everyone. \u00a0This customer manufactures cold-extruded, shaped, and bent aluminum products. Previously, they used Cr12MoV and SKD11, both of which were prone to sticking to aluminum shavings, resulting […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-864","post","type-post","status-publish","format-standard","hentry","category-blog"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t