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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 Stamping Die Steel DHA-HS1 Font Size Normal Large DHA-HS1 DHA-HS1 is die steel suitable for hot stamping, in which steel sheets heated to high temperatures are press-formed. Due to its high thermal conductivity, the cooling time of products is reduced, and thus the productivity is increased. Moreover, its high softening resistance extends die life.Therefore, DHA-HS1 helps cut costs of hot-stamped products. Background Amid growing environmental concerns, automobile manufactures are rapidly shifting to lightweight auto parts with the aim of improving fuel economy. Under the circumstances, automobile parts are being increasingly produced by hot stamping, using ultra-high tensile strength steel with a tensile strength of over 1 GPa. In response to this growing demand, Daido Steel has developed hot stamping die steel with high thermal conductivity, which can efficiently cool hot steel sheets. Hot stamping method In conventional press forming methods, steel sheets are formed at room temperature. However, in the hot stamping method, steel sheets heated to high temperatures are press-formed in dies and are quenched rapidly while being formed, which increases their strength. Brand name Features DHA-HS1 is "Hot stamping die steel", which offers high thermal conductivity as well as excellent abrasion resistance at high temperatures. It contributes to increasing productivity and improving die life. ※Practical hardness High thermal conductivity High cooling efficiency With high thermal conductivity of approx.36(W/m·K) at room temperature, DHA-HS1 helps reduce cooling time of dies and steel sheets. Thermal conductivity Dimensions：Φ10 × 2mm Measurement method：Laser flash method Quenching：1030℃, Gas cooling (6bar) Hardness： DHA-HS1 : 54HRCH13 eq.   : 50HRC Test results by an actual hot stamping equipment [Test method]The temperature of two types of die steel sheet alignedtogether was measured immediately after forming [Test conditions] Forming cycle：3.0 spm Holding time at the bottom dead center：6.0 sec. Temperature of steel sheetwhen forming process started：approx. 850 ℃ Cooling water temperature：approx. 18 ℃ Water line position：approx. 10 mm from the die surface High hardness Stable hardenability Practical hardness of up to 54 HRC is obtained at a wide range of tempering temperatures. Surface treatment also can be applied. Quenching and tempering hardness Dimensions：10×15×20 mm Quenching：1030 ℃, Gas cooling (6bar) Cross-sectional hardness distribution DHA-HS1 model (Approx. 130 kg) Quenching：1030 ℃, Gas cooling (6bar) Tempering：560 ℃ × 1h × 2 times High softening resistance Excellent heat resistance DHA-HS1 retains high hardness at elevated temperatures when in contact with hot steel sheets. Additionally, die life is increased because of its high heat resistance. Softening resistance Dimensions：10×15×20 mm Quenching：1030 ℃, Gas cooling (6bar) Leaflet and brochure Brochure for DHA-HS1（1,234KB） Leaflet for DHA-HS1 (617KB) 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©2019 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 Hot Stamping Die Steel DHA-HS1 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