{"id":1150,"date":"2026-07-14T09:41:48","date_gmt":"2026-07-14T09:41:48","guid":{"rendered":"https:\/\/www.wudejiansteel.com\/?p=1150"},"modified":"2026-07-14T09:41:50","modified_gmt":"2026-07-14T09:41:50","slug":"what-type-of-die-steel-is-durable-for-punching-0-6-thick-301-stainless-steel-skh51-chips-away-quickly-blog-228","status":"publish","type":"post","link":"https:\/\/www.wudejiansteel.com\/?p=1150","title":{"rendered":"What type of\u00a0die steel\u00a0is durable for punching 0.6-thick 301 stainless steel? SKH51\u00a0chips away quickly.blog\u00a0228"},"content":{"rendered":"\n

During last night\u2019s 298th live stream, a viewer asked which die<\/strong> steel<\/strong> would be more durable for machining 0.6 301 stainless steel. Currently, they\u2019re using SKH-51 high-speed steel<\/strong>, but it breaks easily.<\/p>\n\n\n\n

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The product has sharp corners and is a hard material; combined with these three factors, the first material that comes to mind is 8566 chipping-resistant steel.<\/p>\n\n\n\n

\u00a08566 die steel<\/a><\/strong>\u00a0offers four times the chipping resistance of SKH-9 high-speed steel and twice that of D2, with a hardness of 58\u201360 HRC. It is primarily designed to address chipping issues that high-hardness die steels such as D2, DC53, and SKH-9 cannot resolve. In particular, for stainless steel stamping, sharp-corner stamping, narrow-flange stamping, and thick-sheet stamping\u2014especially in narrow-flange conditions where the punch width is less than the sheet thickness or the stamping ratio is less than 1:1\u2014chipping issues that standard die steels cannot resolve are all addressed using 8566.<\/p>\n\n\n\n

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Our customer, Mr. Liu, was stamping 0.4-thick 304 stainless steel\u2014a hard material with a hardness of 400 HV and a relatively complex product structure featuring narrow edges. He used 8566 to perform 150,000 stamping cycles without experiencing any fractures or wear issues. Mr. Liu was very pleased.<\/p>\n\n\n\n

Regarding the 0.6-thick 316 stainless steel mentioned by this user\u2014a material with some hardness and sharp corners\u2014SKH51 is prone to fracture under these conditions. Since the die conditions are similar to Mr. Liu\u2019s, 8566 anti-chipping steel<\/strong> can resolve the issue; this is precisely the type of application where 8566 excels. Using 8566 die steel for punch chipping makes all the difference\u2014it\u2019s like night and day.<\/p>\n\n\n\n

\u00a0Second option: If you feel that 8566 is too soft and prefer a higher hardness, then go ahead and pay three times the price for PM23 powdered high-speed steel<\/a><\/strong>.<\/p>\n\n\n\n

 PM23 has a hardness of 64\u201366 HRC. Thanks to advanced powder metallurgy processes, this die steel offers both high hardness and high strength. PM23\u2019s resistance to chipping and wear is 2\u20133 times that of SKH-51.<\/p>\n\n\n\n

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We have a customer who stamps 1.5 304 stainless steel into 1.5 \u00d7 2 mm narrow strips. The original die was a major headache\u2014a set of punches and dies could only produce a maximum of 50,000 parts before burrs appeared, and the resulting metal shavings even damaged the products. After he contacted me, I recommended he use PM23.<\/p>\n\n\n\n

 The results with PM23 were excellent\u2014they could now stamp 200,000 products in a single run without damaging the parts. PM23 increased the die life from the original 50,000 strokes (which included damage issues) to 200,000 strokes, effectively quadrupling the service life.<\/p>\n\n\n\n

 Regarding the 0.6-thick 301 stainless steel with sharp corners that this viewer mentioned\u2014SKH51 is prone to breaking in such cases. If you don\u2019t want to use 8566 chipping-resistant steel, then spending three times as much on PM23 is a perfectly viable option.<\/p>\n\n\n\n

 Since I couldn\u2019t see the product\u2019s structure during the livestream, I could only offer him these two material options. The specific choice of mold steel is up to the viewer to decide; they should weigh their options based on their mold\u2019s production cost.<\/p>\n\n\n\n

 I don\u2019t sell products in the livestream, so there\u2019s no need to send virtual gifts. If you have questions about mold steel, feel free to ask. As long as you clearly describe the mold\u2019s operating conditions, I\u2019ll definitely provide you with 2\u20133 material selection suggestions. You can then choose the appropriate mold steel grade based on your mold\u2019s cost and service life requirements. This way, you won\u2019t be torn between options, won\u2019t take any detours, and won\u2019t have to learn the hard way.<\/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","protected":false},"excerpt":{"rendered":"

During last night\u2019s 298th live stream, a viewer asked which die steel would be more durable for machining 0.6 301 stainless steel. Currently, they\u2019re using SKH-51 high-speed steel, but it breaks easily. The product has sharp corners and is a hard material; combined with these three factors, the first material that comes to mind is 8566 chipping-resistant steel. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1150","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