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{{menuText}} Search Japanese Chinese Contact Us Quote About DAIDO STEEL Products R&D Investor Relations Sustainability Sustainability --> 学生の皆さまへ --> Tool Steel Close Tool Steel Tool steel is one of Daido's major products and we have a wide variety of products for cold, hot, high speed and plastic mold applications. Some of our brand steels are highly evaluated globally such as DC53 and NAK. To satidfy our customers' demands, we are pursuing high quality products and high performance technical services. TOP Products Tool Steel DCMX Font Size Normal Large DCMX DCMX is the first matrix type cold work die steel in Japan, which was marketed in October 2008. Excellent isotropy has been achieved by reducing coarse carbides to the extreme limit. Easy dimension adjustment during heat treatment contributes to shortening the lead time for making dies for cold pressing and cold forging.In addition, high toughness is expected to improve die life. Furthermore, it has high hardness and excellent machinability, that is it has ease of making dies and high performance at the same time. Background While the demand for shorter delivery times and lower costs is increasing for dies for cold pressing and cold forging, the load on dies is increasing. Therefore materials that have good die manufacturability and high performance are desired. We have developed DCMX, a new cold work die steel with a matrix-type microstructure, by making full use of the carbide control technology developed in the Matrix Type High Speed Steel DRM series, which was launched in the autumn of 2004. What is a matrix-type metal structure? The structure that excludes "coarse primary carbides" from the tool steel structure is called the "matrix (base)". "Coarse primary carbides" are useful substances that prevent wear in cutting tools, but they tend to be the starting point for cracking in dies and should be reduced. Brand name Features "Matrix Type Cold Work Die Steel" contributes to easier die making and longer life. High hardness（Wear resistance） The highest hardness of 62HRC can be obtained in the high temperature tempering at about 500℃ or higher. Surface treatment also can be applied. Tempered hardness Dimensions: 15×15×15mm Quenching: 1030℃×1h - Air cooling High toughness（Crack resistance, Chipping resistance） Improvement of impact value by matrixing suppresses occurrence of cracking and chipping at the initial stage of die use. Toughness Specimen: 10R Notch, L-direction Quenching: 1030℃×1h - Air cooling, High temp. Excellent isotropy（Reduction of dimensional correction man-hours） The dimensional change after heat treatment is isotropic, and the amount of change is minimized in the tempering process at about 500°C, which gives the highest hardness. Therefore, in large cold press dies for forming automotive parts, reduction of machining time for dimension correction when combining blocks and omission of correction process can be expected. Dimensional change Excellent machinability（Reduction of die production lead time） Matrixing and machinable inclusions (MnS) provide excellent machinability, which contributes to the ease of making dies. Machinability（As annealed） Endmilling Tool: VP15TF (Mitsubishi Materials) φ32, Single tooth, Down Cut　 Depth of cut: 1×4 mm　 Speed: 150 m/min　 Feed: 0.15 mm/rev　 Coolant: Air blow Drilling Tool: SKH51 (NACHI) φ5, No-coated　Depth of hole: 20 mm (Not-through) Feed: 0.15 mm/rev　Cutting fluid: None (dry) Brochure Brochure for DCMX (PDF：1,951KB) Technical Data Takayuki Shimizu et al. : "A New Type Cold Work Die Steel with Isotropy of Dimensional Change "DCMX" " (No. SD2006)(No. SD2006)(923KB) Source: DENKI-SEIKO (Electric Furnace Steel), vol. 81 (2010), No.1, p53 - 60 The application of DCMX (No. SD1901)(818KB) 関連資料 プレスリリース (2008年 9月18日)「マトリックス冷間ダイス鋼「DCMX」を発売　～冷間金型の製作リードタイム短縮、寿命向上に貢献～」 「冷間ダイス鋼の熱処理変寸の異方性に及ぼす晶出炭化物の影響」 2007 年 78 巻 4 号 p. 289- 「熱処理寸法の制御が容易なマトリックス冷間ダイス鋼 DCMX」 2010 年 81 巻 1 号 p.53- 大同特殊鋼技報「電気製鋼」はこちらから（J-STAGEでご覧いただけます） --> Contact Us Contact Us Quote We will send it directly to the person in charge of the product. We will contact you after confirming the contents. Document Disclaimer The product characteristics included in this website are the representative values based on the result of our measurements, and do not guarantee the performance in use of the products. Please contact our department in charge for the latest information as the information of this website may be updated as needed without advance notice. Copyright©2021 Daido Steel Co., Ltd. All rights reserved. Requires Adobe Acrobat Reader Tool Steel Hot Work Tool Steel(Hot-Forming Die) Used for forging dies for forming heated metal materials. Hot Work Tool Steel (Die-Casting Die) Used for die casting molds for casting molten alloys (Al etc.). Hot Stamping Die Steel Used for hot stamping dies, which form and quench heated steel sheets. Cold Work Tool Steel Used for cold press and forging dies for forming steel plates and blocks. Plastic Mold Steel Used for injection molds for forming plastic products. Tool Steel Products list Daido's Brand steels list. Global Network for Tool Steel Notable products DHA-HS1 DHA-HS1 provides the highest level of thermal conductivity, which allows shorter cooling time and greater productivity. In addition, its high softening resistance prolongs die life. DHA-HS1, which is ideal for hot stamping dies, can create cost savings in press processing. NAK80 World class stable and reliable quality steel, NAK80, has been selected as the most suitable steel for plastic molds. --> Notable product DCMX First matrix type cold work die steel in Japan It will contribute to both reduction of lead time for die manufacturing and improvement of die life. DHA-HS1 DHA-HS1 provides the highest level of thermal conductivity, which allows shorter cooling time and greater productivity. In addition, its high softening resistance prolongs die life. DHA-HS1, which is ideal for hot stamping dies, can create cost savings in press processing. NAK80 World class stable and reliable quality steel, NAK80, has been selected as the most suitable steel for plastic molds. DHA-WORLD Daido Steel's high-reliable conventional hot work die steel, DHA-WORLD is suitable material for die cast molds. It is easily heat-treated and able to gain fine structure to the center as well as high toughness. Products List Mechanical Construction Steel Stainless Steel Tool Steel Superalloy Strip Forging Die Forging Alloy Powder Welding Wire Titanium & Titanium Alloy Target Material, New Metal Machinery Star LED Point Source LEDs Permalloy foil TOP Products Tool Steel DCMX About DAIDO STEEL Products R&D Investor Relations Sustainability Sustainability --> Students --> Contact Us Quote Site Map Privacy Policy 電子公告 --> Terms of Use Japanese Chinese Copyright©1996-2024 Daido Steel Co., Ltd. search CLOSE Product inquiry