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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 Hot Work Tool Steel (Die-Casting Die) Font Size Normal Large Hot Work Tool Steel (Die-Casting Die) Daido Steel's tool steels lineup for die casting includes H13, matrix-high-speed steel, and original steel grades with excellent thermal conductivity and hardenability for large products. Our products contribute to the prevention of heat checking, soldering, erosion and other issues that may happen in Al, Zn and Mg die-casting. Surface treatment such as nitriding or PVD coating is also possible. Conceptual diagram --> Products list Grade Brand name Equivalent standard Characteristics Detailed information JIS AISI WNr. Special page Brochure Technical data Type H13 & Modified (5Cr) Single melted DHA1 SKD61 H13eq. 1.2344eq. ・General-purpose hot work diesteel DHA-WORLD SKD61mod. H13mod. 1.2344mod. ・High hardenability & toughness DH2F SKD61mod. H13mod. 1.2344mod. ・40HRC Pre-hardened steel ・Easy machining Type H13 & 2367 modified (5Cr) Remelted DHA1-A SKD61 H13eq. 1.2344eq. ・Remelted steel of DHA1 DH31-EX - - 1.2367mod. ・High hardenability & toughness ・High strength at elevated temp. HighThermalConductivitySteel DHA-Thermo - - - ・High thermal conductivity High SpeedTool SteelMatrix Type DRM1 - - - ・High toughness ・Maximum hardness 58HRC For the latest physical property data, please see "Physical Properties“.Values listed in the brochure may differ. Hot Work Tool Steel High Speed Tool Steel For technical information on Hot Work Tool Steel (Die-Casting Die) in general and peripheral technologies, please see "Related Documents". Click here for TIG welding rod "DHW" for repairing Die-Casting Dies. Technical Data No. Title Publication / Source Volume & page Read the document S01e Document with comments "DHA-WORLD"(No. SD2002) - - Open PDF file S02e Document with comments "DH31-EX"(No. SD2001) - - Open PDF file A01 熱間工具鋼の被削性におよぼすSi量の影響 大同特殊鋼技報「電気製鋼」 2000年 71巻 2号 p.119-129 Go to J-STAGE site (A01e) Effect of Si Content on the Machinabilityof Hot Working Die Steels (No. SD2005) Source: DENKI-SEIKO(Electric Furnace Steel) 2000, Vol. 71, No. 2, p. 119-129 Open PDF file A02 熱間工具鋼の被削性におよぼすSiおよび硬さの影響 大同特殊鋼技報「電気製鋼」 2003年 74巻 2号 p.83-92 Go to J-STAGE site A03 高信頼性汎用熱間ダイス鋼 “DHA-WORLD” 大同特殊鋼技報「電気製鋼」 2010年 81巻 1号 p.47-52 Go to DENKI-SEIKO page C01 ダイカスト金型のヒートチェックに及ぼす硬さと合金元素 “モリブデン、シリコン” の影響 大同特殊鋼技報「電気製鋼」 2010年 81巻 1号 p.25-31 Go to DENKI-SEIKO page C02 ダイカスト金型用の高熱伝導率工具鋼“DHA-Thermo” 大同特殊鋼技報「電気製鋼」 2010年 81巻 1号 p.41-46 Go to DENKI-SEIKO page C03e High Thermal Conductivity Steel and itsApplication to Die Casting Tools(No. SD2103) Source: NADCA Die CastingCongress & Exposition 2012, Transaction No. T12-071 Open PDF file C04e Development and Applications of HighHardenability Special Quality Die CastingMold Steels (No. SD2104) Source: NADCA Die CastingCongress & Tabletop 2013, Transaction No. T13-052 Open PDF file C05 ダイカスト金型用鋼の衝撃値と耐ヒートチェック性 大同特殊鋼技報「電気製鋼」 2017年 88巻 2号 p.101-106 Go to DENKI-SEIKO page C06 分流子の熱伝導率がその温度とビスケット部の凝固組織におよぼす影響 大同特殊鋼技報「電気製鋼」 2020年 91巻 2号 p.91-96 Go to DENKI-SEIKO page C07e Gross crack mechanism analysis fordie-casting die (No. SD2102) Source: KATA-GIJYUTSU(Die and Mould Technology) 2020, Vol.35, No.12, p.42-43 Open PDF file L01 高硬度・高靭性マトリックスハイスDRM鋼の開発 大同特殊鋼技報「電気製鋼」 2005年 76巻 4号 p.279-286 Go to J-STAGE site (L01e) The Development of High Hardness andToughness Matrix Type High Speed ToolSteels “DRM” (No. SD2108) Source: DENKI-SEIKO(Electric Furnace Steel) 2005, Vol. 76, No. 4, p. 279-286 Open PDF file L02 金型用マトリックスハイスDRM鋼の実用事例 大同特殊鋼技報「電気製鋼」 2007年 78巻 4号 p.353-360 Go to J-STAGE site Related Documents No. Title Publication / Source Volume & page Read the document D01 熱間工具鋼の軟窒化後窒素濃度分布に及ぼす合金元素の影響 大同特殊鋼技報「電気製鋼」 2007年 78巻 4号 p.307-314 Go to J-STAGE site D02 熱間ダイス鋼における軟窒化拡散層のTEM組織観察 大同特殊鋼技報「電気製鋼」 2007年 78巻 4号 p.315-322 Go to J-STAGE site D03 湯流れ解析によるダイカスト金型のヒートチェック予測 大同特殊鋼技報「電気製鋼」 2014年 85巻 1号 p.53-61 Go to DENKI-SEIKO page D04e New Surfacing Material “DHW”(No. SD2105) Source: NADCA Die CastingCongress & Tabletop 2016, Transaction No. T16-042 Open PDF file D05 数値解析によるダイカストの離型抵抗予測 大同特殊鋼技報「電気製鋼」 2017年 88巻 1号 p.33-38 Go to DENKI-SEIKO page D06e Evaluation of Heat Checking of Moldsthrough Flow and SolidificationSimulation (No. SD2106) Source: NADCA Die CastingCongress & Exposition 2018, Transaction No. T18-012 Open PDF file Inquiries about Tool Steel Contact Us Quote We will send it directly to the person in charge of the product. We will contact you after confirming the contents. --> 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. 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