{"id":1045,"date":"2026-07-02T09:32:41","date_gmt":"2026-07-02T09:32:41","guid":{"rendered":"https:\/\/www.wudejiansteel.com\/?p=1045"},"modified":"2026-07-02T09:32:41","modified_gmt":"2026-07-02T09:32:41","slug":"red-punch-heads-require-high-thermal-wear-resistance-and-mr-zhang-gave-8566-die-steel-a-five-star-rating-blog-206","status":"publish","type":"post","link":"https:\/\/www.wudejiansteel.com\/?p=1045","title":{"rendered":"Red punch heads require high thermal wear resistance, and Mr. Zhang gave\u00a08566 die steel\u00a0a five-star rating.blog\u00a0206"},"content":{"rendered":"\n

He added me on WeChat back in 2022, and today he asked again, \u201cHow much does 8433 mold steel<\/a><\/strong>\u00a0cost per kilogram?\u201d<\/p>\n\n\n\n

 This is already the fourth time someone has asked me how much per kilogram it costs across these two WeChat accounts, so I told him straight up: \u201cWe added each other on WeChat back in 2022. At the time, you mentioned that for hot-forged stainless steel, Y4 die steel had a short service life\u2014the dies wore out too quickly, making production unfeasible. I recommended you use 8566, but after I quoted you a price, you said it was too expensive and that there was cheaper 8566 on the market. We haven\u2019t been in touch since.\u201d It\u2019s been so long that I don\u2019t remember the specific mold operating conditions. I\u2019d like to ask: since you\u2019re suddenly inquiring about the heat-resistant steel 8433, what kind of mold are you planning to use it for?<\/p>\n\n\n\n

 After a rambling conversation lasting over 10 minutes, here\u2019s what I gathered about the operating conditions: hot forging of 20CrMnTi to punch a 22.5 hole. Currently, an H13 punch is being used, and the hole is not machined\u2014it must be burr-free. However, the H13 punch can\u2019t produce many parts before burrs appear on the other end of the product, and the punch wears out too quickly, making production unfeasible. The customer also keeps complaining that the burrs on the products are too large, so they\u2019re looking for a durable die steel.<\/p>\n\n\n\n

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

\u00a0I explained to him that hot-forging punches require high thermal wear resistance, so the die steel<\/a><\/strong> must be selected for its high heat resistance, high hardness, and high toughness.<\/p>\n\n\n\n

 H13 is a medium-carbon hot-work die steel with a chemical composition of 4Cr5MoSiV1 and a hardness of HRC 50. and while it has good toughness, it has poor heat resistance, low hardness, and poor thermal wear resistance. Its properties make it unsuitable for red forging punches, especially since your punching die will not undergo further machining and requires extremely high thermal wear resistance. H13 simply cannot meet these requirements. You\u2019re trying to turn straw into gold\u2014your expectations are too high\u2014so it\u2019s not suitable. You need to switch to a different die steel<\/strong>.<\/p>\n\n\n\n

\u00a0For hot-forging punches where durability is a priority, I still recommend 8566 die steel<\/strong>, which offers high heat resistance, high hardness, and high toughness. 8566 has heat resistance comparable to that of SKH51 high-speed steel<\/strong>, with a hardness of HRC 58\u201360, and its toughness is four times that of SKH51. 8566 die steel<\/a><\/strong>\u00a0strikes the perfect balance between high heat resistance, high hardness, and high toughness\u2014something other die steels simply cannot achieve. As Mr. Zhang mentioned, when hot-forging 304 stainless steel, 8566 earned a five-star rating; the product\u2019s surface finish is excellent, and the finished product looks just like a tube.<\/p>\n\n\n\n

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

 Your product requires a high surface finish, so 8566 mold steel is more suitable for your hot-forged rods. Although 8433 has 2\u20133 times the heat resistance of H13, its hardness of HRC 50\u201354 is likely a bit too low for use as a punch.<\/p>\n\n\n\n

 After chatting with him for a while, I realized he still couldn\u2019t afford it\u2014he was mainly there to compare prices and learn more about material selection.<\/p>\n\n\n\n

 So I told him objectively that Wu Dejian mold steel either matches or surpasses the world\u2019s top brands\u2014it\u2019s used by three Fortune 500 companies, and Kyocera has been sourcing it for seven consecutive years. We focus on our proprietary products and do not produce standard steel grades from specific mills. We do not produce anything below the\u5408\u683c\u54c1 standard; in fact, we only produce top-grade products, including those that meet the\u5408\u683c\u54c1 standard.<\/p>\n\n\n\n

 The quality of the mold steel we smelt here is exceptional, but the price is high. If you\u2019re looking for something cheaper\u2014if you prefer low prices\u2014then go ahead and buy \u201cSi Chao\u201d mold steel. Their prices are set to match ours. Just like you said in 2022, you wanted it for over 100 per kilogram, but \u201cSi Chao\u201d 8566 is only a few dozen per kilogram. We don\u2019t produce counterfeit goods, so we can\u2019t meet the low price you\u2019re looking for. You\u2019d be better off going to them. When you\u2019re ready to use high-quality materials in the future and can afford the cost of good mold steel, come back to us. Thank you.<\/p>\n\n\n\n

 When communicating with customers, be sincere, tell the truth, and be polite\u2014don\u2019t hold them up while they\u2019re comparing prices.<\/p>\n\n\n\n

 *************<\/p>\n\n\n\n

Wu Dejian’s <\/strong>tool<\/strong> steel<\/strong>, the chief of staff of the user, bought everything he had used.<\/p>\n","protected":false},"excerpt":{"rendered":"

He added me on WeChat back in 2022, and today he asked again, \u201cHow much does 8433 mold steel\u00a0cost per kilogram?\u201d  This is already the fourth time someone has asked me how much per kilogram it costs across these two WeChat accounts, so I told him straight up: \u201cWe added each other on WeChat back […]<\/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-1045","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