Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48)

Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) Product Information -:- For detailed product information, please contact sales. -: Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) Synonyms -:- For detailed product information, please contact sales. -:

Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) Product Information -:- For detailed product information, please contact sales. -: # **Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48)** ## **Product Overview** Latrobe DuraTech™ M48 represents the pinnacle of powder metallurgy (PM) high-speed steel technology, engineered to meet the demanding specifications of ASTM M48. Through advanced gas atomization and hot isostatic pressing (HIP) manufacturing, this material achieves an exceptionally fine, homogeneous, and isotropic microstructure unattainable through conventional ingot metallurgy. Characterized by its ultra-high carbon and vanadium content, DuraTech™ M48 delivers **unmatched abrasive wear resistance** while maintaining remarkable **toughness and grindability**—a combination that defines the superior performance envelope of PM tool steels. This grade is specifically formulated for applications where extreme wear is the primary failure mechanism, particularly in machining advanced superalloys and abrasive workpiece materials. ## **Key Features & Benefits** * **Ultimate Wear Resistance:** Exceptionally high volume fraction of fine, hard MC-type vanadium carbides provides supreme resistance to abrasive and adhesive wear, offering the longest possible tool life in severe applications. * **Superior Microstructural Homogeneity:** The PM process eliminates carbide segregation and banding, ensuring consistent mechanical properties in all directions and across all cross-sections, even in large tooling blanks. * **Excellent Toughness-to-Hardness Ratio:** The fine, evenly distributed carbide structure prevents stress concentrations, resulting in significantly higher toughness compared to conventional high-speed steels of similar wear resistance, reducing chipping and catastrophic failure. * **Enhanced Grindability:** Despite its extreme alloy content, the favorable carbide morphology allows for efficient and predictable grinding, enabling the production of sharp, precise, and complex cutting edges. * **Optimal Red Hardness:** Balanced cobalt content supports high-temperature hardness, maintaining cutting edge integrity under the thermal loads generated by high-speed or difficult-to-machine materials. ## **International Standard & Designations** * **Primary Standard:** **ASTM A600-92a (R2023):** Standard Specification for Tool Steel High Speed. * **Grade:** **M48** (PM / Particle Metallurgy variant) * **Manufacturing Process:** **Powder Metallurgy, Hot Isostatically Pressed (PM-HIP)** * **Unified Numbering System (UNS):** **T11348** * **Common International Equivalents (PM-based):** * **European PM Designation:** Functionally similar to high-performance PM grades like **Vanadis 60** (Uddeholm) or **ASP® 2060** (Höganäs) in its performance category. * **Conventional Ingot Equivalent (for reference):** **ASTM M48** (AISI M48) ## **Chemical Composition (%, typical)** The chemistry of M48 is optimized for maximum carbide volume, with carbon and vanadium at the forefront. | Carbon (C) | Tungsten (W) | Molybdenum (Mo) | Vanadium (V) | Chromium (Cr) | Cobalt (Co) | Iron (Fe) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1.40 - 1.55 | 9.50 - 10.50 | 4.75 - 5.50 | 3.00 - 3.50 | 3.50 - 4.25 | 8.00 - 9.50 | Balance | *Note:* The ultra-high combined carbon and alloy content produces one of the highest attainable carbide volumes in commercial high-speed steel, directly responsible for its legendary wear resistance. ## **Physical & Mechanical Properties (Typical)** | Property | Value / Description | | :--- | :--- | | **Density** | ~8.3 g/cm³ (0.300 lb/in³) | | **Hardness (Annealed)** | 280-310 HB (Brinell) | | **Hardness (Heat Treated)** | **67 - 69 HRC** (Typical optimal working range) | | **Austenitizing Temperature** | 1190 - 1220°C (2175 - 2230°F) | | **Tempering Temperature** | 525 - 570°C (975 - 1060°F) (Minimum of three tempers required) | | **Transverse Rupture Strength** | High for its extreme hardness, a hallmark of the tough PM matrix. | | **Red Hardness** | Excellent, capable of maintaining performance at temperatures exceeding 600°C (1110°F). | ## **Product Applications** Latrobe DuraTech™ M48 is the definitive material for tools requiring the absolute maximum service life under extreme abrasive and demanding cutting conditions. * **Superalloy & Hard Material Machining:** * **End mills and milling cutters** for nickel-based superalloys (Inconel 718, Waspaloy), titanium alloys, and cobalt-based alloys. * **Inserts and form tools** for turning and boring hardened steels (>55 HRC) and heat-resistant alloys. * **Gear hobs and skiving tools** for high-precision, high-volume production of aerospace and power transmission components. * **Precision Cutting & Forming Tools:** * **Broaches** for abrasive aerospace materials. * **Solid carbide tool alternatives** (e.g., drills, reamers) for deep-hole or high-wear applications. * **Thread rolling and forming dies** requiring the ultimate in wear life. * **High-performance saw blades** and slitter knives for advanced composites and metals. * **Target Workpiece Materials:** * Nickel-based & cobalt-based superalloys * Titanium alloys (Ti-6Al-4V) * Hardened tool steels and die steels (HRc > 55) * Abrasive cast irons (CGI, high-silicon aluminum) * Carbon fiber reinforced polymers (CFRP) and metal matrix composites (MMCs) * High-strength stainless steels (PH grades, work-hardening grades) ## **Processing Notes** * **Heat Treatment:** Requires precise control in a vacuum or protective atmosphere furnace to prevent decarburization. The fine PM structure responds consistently to hardening cycles. Multiple tempering cycles are critical to achieve maximum secondary hardness and dimensional stability. * **Grinding:** Use sharp, friable grinding wheels (premium alumina or CBN) with adequate coolant. The superior grindability of PM M48 allows it to be ground efficiently despite its extreme hardness. * **Availability:** Supplied as annealed, spheroidized bars, billets, or near-net-shape preforms. The PM-HIP process enables the production of large, fully dense sections with uniform properties throughout. --- **Disclaimer** *This information is for descriptive and informational purposes only. Properties can vary based on specific production lot, heat treatment parameters, and final part geometry. It is the responsibility of the end-user to validate the material's suitability for their specific application and to conduct appropriate testing under actual operating conditions. Always consult the latest official Latrobe Specialty Steel technical data sheets and processing guidelines.* -:- For detailed product information, please contact sales. -: Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) Specification Dimensions Size： Diameter 20-1000 mm Length <5346 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. -: Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) -:- For detailed product information, please contact sales. -:

Packing of Latrobe DuraTech™ M48 Powder Metal High Speed Steel (ASTM M48) -:- 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 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 1817 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