International Mold Steel Wire,Daido DRM3 Matrix High-Speed Steel Wire

International Mold Steel Wire Daido DRM3 Matrix High-Speed Steel Wire Product Information -:- For detailed product information, please contact sales. -: International Mold Steel Wire Daido DRM3 Matrix High-Speed Steel Wire Synonyms -:- For detailed product information, please contact sales. -:

International Mold Steel Daido DRM3 Matrix High-Speed Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: Daido DRM3 (DEX60) Premium Powder Metallurgy (PM) Matrix High-Speed Steel** ## **1. Overview** **Daido DRM3 (commercial name: DEX60)** is an **ultra-premium, powder metallurgy (PM) processed, high-cobalt matrix high-speed steel** that represents the pinnacle of wear-resistant and high-temperature performance in Daido Steel's DRM series. Engineered for applications demanding the **ultimate combination of hot hardness, wear resistance, and dimensional stability**, DRM3 incorporates an exceptionally high cobalt content alongside optimized levels of carbide-forming elements. This advanced material is specifically designed for tools and dies operating under **extreme conditions of abrasion, high pressure, and sustained elevated temperatures** (exceeding 600°C/1112°F) where even premium-grade conventional tool steels fail. Its PM manufacturing ensures a **perfectly homogeneous microstructure with a uniform, ultra-fine distribution of hard carbides**, delivering unparalleled consistency and isotropic mechanical properties for the most demanding precision tooling applications. ## **2. International Standards & Specifications** DRM3 is a proprietary, top-tier PM steel from Daido Steel, representing the highest performance category within their matrix steel lineup, with no direct equivalent in standard tool steel classifications. * **Primary Manufacturer Standard:** * **Daido Steel DRM3 / DEX60:** Proprietary specification for this ultra-high-performance, cobalt-rich powder metallurgy matrix steel. * **Material Classification & Comparative Grades:** * **Type:** **High-Cobalt Powder Metallurgy Super High-Speed Steel (PM-SHSS)**. * **Performance Benchmark:** Occupies the top performance tier, surpassing even high-cobalt HSS grades like **AISI M42 (1.3247)** and approaching the performance of some specialized **powder metallurgy cobalt-based alloys**. It is considered superior to its sibling DRM2 in hot hardness and overall high-temperature performance. * **International PM Steel Equivalents (Similar Tier):** * **Böhler S790 ISOPLUS** (Austria) * **Uddeholm ASP 2060 (Modified/High-Co variants)** (Sweden) * **ASSAB V-14 (HSP-70)** (Sweden) * **ISO 4957:** Classified under high-alloy tool steel groups, but is a specific proprietary PM grade with performance exceeding standard categories. ## **3. Chemical Composition (Weight %, Typical)** The composition is meticulously balanced to maximize both matrix strength (via cobalt) and carbide volume (via tungsten, molybdenum, and vanadium) for extreme service. | Element | Typical Range (%) | Role & Benefit | | :--- | :--- | :--- | | **Carbon (C)** | 1.30 – 1.50 | Precisely controlled to optimize the formation of hard, complex carbides without compromising the integrity of the high-cobalt matrix. | | **Chromium (Cr)** | 4.00 – 4.80 | Provides hardenability and general corrosion/oxidation resistance at elevated temperatures. | | **Molybdenum (Mo)** | 5.00 – 6.00 | A primary alloy for grain refinement, hardenability, and contributing to high-temperature strength and secondary hardening. | | **Tungsten (W)** | 10.00 – 11.50 | **Very high tungsten content** is critical for exceptional **hot hardness (red hardness)** and thermal stability. Forms stable tungsten carbides that resist coarsening at high temperatures. | | **Vanadium (V)** | 3.50 – 4.50 | **Critical for supreme abrasion resistance.** Forms an exceptionally high volume of extremely hard, fine **vanadium carbides (VC)**. The PM process is essential to incorporate this level of vanadium effectively. | | **Cobalt (Co)** | 10.50 – 11.50 | **The defining element of DRM3.** This very high cobalt content **dissolves entirely in the steel matrix**, dramatically increasing **high-temperature strength, hot hardness, tempering resistance, and thermal conductivity**. It enables the steel to retain functional hardness at temperatures approaching 650°C. | | **Matrix Composition:** The synergistic combination of a Co-strengthened matrix and a dense, fine dispersion of (W,Mo,V)C carbides creates a composite-like material with extraordinary properties. ## **4. Typical Physical & Mechanical Properties (Heat Treated)** * **Recommended Heat Treatment:** * **Preheating:** **Staged preheating is critical** (e.g., 500°C, then 850°C) to prevent cracking due to high alloy content and low thermal conductivity in the annealed state. * **Austenitizing (Hardening):** 1190-1230°C (2175-2245°F). Requires extremely precise temperature control in a vacuum or protective atmosphere furnace. * **Quenching:** High-pressure gas quenching (N₂ or Ar) is preferred for minimal distortion; oil quenching is possible with extreme care. * **Tempering:** **Mandatory triple or quadruple tempering.** Typical tempering range: 550-600°C (1020-1110°F). Exhibits a very high and broad secondary hardening peak. * **Mechanical Properties (Hardened & Properly Tempered):** * **Hardness:** **67 – 69 HRC** (achievable range). Represents the extreme upper limit for steel-based tool materials. * **Hot Hardness (Red Hardness):** **Outstanding.** Can retain over 62 HRC at 600°C and significant hardness above 650°C, a key performance differentiator. * **Compressive Strength:** Extremely high (>3800 MPa), capable of withstanding the highest pressures in cold/hot forming. * **Bending Strength:** Moderate to good for its extreme hardness. The material prioritizes wear/heat resistance; it is not designed for high-impact applications. * **Impact Toughness:** Low to moderate. This is the trade-off for its extreme hardness and hot strength. It is more brittle than DRM1 or DRM2 but offers superior toughness to conventionally cast super high-speed steels with similar composition due to the refined PM structure. * **Abrasion Resistance:** **Among the highest available in any commercial tool steel,** due to the high volume of ultra-hard vanadium carbides and the extreme hardness of the cobalt-strengthened matrix. * **Physical Properties:** * **Density:** ~8.4 g/cm³ * **Modulus of Elasticity:** ~210 GPa * **Thermal Conductivity:** Higher than most tool steels due to high cobalt content, aiding in heat dissipation from the tool edge or working surface. * **Coefficient of Thermal Expansion:** Slightly lower than low-alloy steels, contributing to better dimensional stability under thermal cycling. ## **5. Product Application** DRM3 is reserved for the most severe and specialized applications where performance is critical and cost is secondary. * **High-Performance Cutting & Machining:** * **Cutting Inserts and Tools** for machining hardened steels (>55 HRC), nickel-based superalloys, and other difficult-to-machine materials at high speeds. * **Broaches, Gear Hobs, and Shaper Cutters** for high-precision, high-volume production of hardened components. * **Severe Cold & Warm Work Applications:** * **Cold Extrusion Punches and Dies** for ultra-high-strength materials, where frictional heating is extreme. * **Thread Rolling Dies** for hard alloys and high-production environments. * **Fine Blanking Tools** for the hardest, most abrasive sheet materials (e.g., silicon steel, hardened spring steel). * **Specialized Wear Parts:** * **Wear Inserts in Hot Work Applications** where temperatures are below those requiring nickel alloys but wear is prohibitive for standard hot work steels. * **Critical Wear Components** in machinery operating in high-temperature, abrasive environments. * **Precision Molding:** * **Cavities, Cores, and Inserts** for molding highly abrasive composites (e.g., long carbon fiber, high ceramic content polymers) at high cycle counts. ## **6. Key Features & Advantages** * **Ultimate Hot Hardness (Red Hardness):** The very high cobalt content provides the highest level of hot hardness retention in the DRM series, allowing operation at temperatures where most steels soften dramatically. * **Extreme Wear/Abrasion Resistance:** The combination of the hardest possible steel matrix and a high volume of ultra-hard vanadium carbides delivers wear resistance at the forefront of metallurgical capability. * **Superior High-Temperature Strength & Temper Resistance:** Exceptional resistance to deformation and softening under load at elevated temperatures. * **Excellent Grindability and EDM Performance:** The fine, uniform PM structure allows for efficient and precise finishing operations, a significant advantage over conventional high-cobalt HSS. * **Unmatched Dimensional Stability:** Predictable and minimal size change during complex heat treatment cycles, enabling the manufacture of high-precision tools. * **Perfect Isotropic Properties:** Uniform performance in all directions eliminates directional weaknesses, ensuring consistent tool behavior and longevity. ## **7. Processing Guidelines** * **Machining (Annealed State):** Very difficult. Requires expert techniques, premium carbide or CBN tooling, and rigid machine tools. * **Grinding:** Use diamond or CBN wheels. Its PM structure provides relatively good grindability for its hardness class. * **Electrical Discharge Machining (EDM):** Suitable. A stress-relief temper after roughing is essential to manage the hardened white layer. * **Heat Treatment:** **Highly specialized and critical.** Must be performed by experts using vacuum furnaces with precise temperature uniformity. **Multiple tempering cycles are absolutely required.** * **Surface Treatments:** An ideal substrate for advanced PVD (AlCrN, TiAlN) and CVD coatings, which can synergistically enhance performance for specific applications. **Summary:** Daido DRM3 (DEX60) represents the apex of high-cobalt, powder metallurgy matrix steel technology. It is a niche, high-investment material engineered for applications where its extraordinary combination of hot hardness and wear resistance is the only solution to extreme operational challenges. By pushing the boundaries of cobalt and carbide content within a homogeneous PM structure, DRM3 delivers a level of high-temperature performance and wear life that defines the state-of-the-art for steel-based tooling. Its use is justified in mission-critical applications where tool failure is not an option, and where its performance translates directly into superior productivity, quality, and total cost-effectiveness despite its high initial price. -:- For detailed product information, please contact sales. -: International Mold Steel Daido DRM3 Matrix High-Speed Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7036 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: International Mold Steel Daido DRM3 Matrix High-Speed Steel Properties -:- For detailed product information, please contact sales. -:

Applications of International Mold Steel Wire Daido DRM3 Matrix High-Speed Steel Wire -:- For detailed product information, please contact sales. -: Chemical Identifiers International Mold Steel Wire Daido DRM3 Matrix High-Speed Steel Wire -:- For detailed product information, please contact sales. -:

Packing of International Mold Steel Wire Daido DRM3 Matrix High-Speed Steel Wire -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Wire drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 3507 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition