Latrobe,DuraTech™ M4 High Carbon Powder Metal High Speed Steel Wire (ASTM M4)

Latrobe DuraTech™ M4 High Carbon Powder Metal High Speed Steel Wire (ASTM M4) Product Information -:- For detailed product information, please contact sales. -: Latrobe DuraTech™ M4 High Carbon Powder Metal High Speed Steel Wire (ASTM M4) Synonyms -:- For detailed product information, please contact sales. -:

Latrobe DuraTech™ M4 High Carbon Powder Metal High Speed Steel (ASTM M4) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: Latrobe DuraTech™ M4 High Carbon, High Vanadium Powder Metallurgy High-Speed Steel** **Overview** Latrobe DuraTech™ M4 is a premium-grade, high-performance high-speed steel (HSS) produced via advanced powder metallurgy (PM) technology. This process ensures a uniform, fine, and homogeneous microstructure free from the carbide segregation common in conventionally cast steels. The result is a material that delivers exceptional combinations of wear resistance, toughness, and hot hardness, making it a superior choice for the most demanding cutting and wear applications. The "High Carbon" and "High Vanadium" formulation of M4 pushes the boundaries of traditional high-speed steels, offering significantly enhanced abrasion resistance, which is critical for machining modern abrasive workpiece materials like stainless steels, high-temperature alloys, and composite materials. **Key Advantages** * **Superior Wear & Abrasion Resistance:** High vanadium carbide content provides outstanding resistance to edge wear and flank wear. * **Enhanced Toughness:** The PM process yields a fine, isotropic structure that provides better toughness and reliability compared to conventional M4, especially in larger cross-sections. * **Excellent Hot Hardness:** Retains high hardness at elevated temperatures generated during high-speed or dry machining operations. * **Improved Grindability (vs. Conventional M4):** While still requiring careful grinding, the uniform PM structure offers more consistent and predictable grindability than its cast counterpart. * **Consistent Performance:** Powder metallurgy guarantees exceptional microstructural uniformity from lot to lot and within a single bar, leading to predictable tool life and performance. **International Standards & Specifications** * **ASTM:** A600 M4 (Standard Specification for Tool Steel High Speed) * **UNS:** T11304 * **ISO:** HS6-5-4-2 (ISO 4957: Tool steels) * **DIN:** 1.3344 * **Common Trade Names:** PM M4, High Vanadium HSS, CPM M4 (a comparable grade from another manufacturer). **Chemical Composition (Typical Weight %)** The composition is balanced to maximize the formation of hard, wear-resistant carbides while maintaining necessary toughness and hardening capability. | Element | Carbon (C) | Tungsten (W) | Molybdenum (Mo) | Vanadium (V) | Chromium (Cr) | | :--- | :---: | :---: | :---: | :---: | :---: | | **% Range** | 1.25 - 1.40 | 5.25 - 6.50 | 4.25 - 5.50 | 3.75 - 4.75 | 3.75 - 4.75 | *Note: May contain smaller amounts of Cobalt (Co), Silicon (Si), and Manganese (Mn).* **Physical & Mechanical Properties (Annealed & Hardened)** * **Density:** ~8.16 g/cm³ (0.295 lb/in³) * **Annealing Temperature:** 850 - 900°C (1560 - 1650°F) * **Hardening (Austenitizing) Temperature:** 1190 - 1230°C (2175 - 2245°F) * **Tempering Temperature:** 540 - 595°C (1000 - 1105°F) – Typically double or triple tempered. * **Achievable Hardness (Hardened & Tempered):** **64 - 66 HRC** is the standard working range, offering the optimal balance of wear resistance and toughness. Hardness up to 67-68 HRC can be achieved for maximum wear resistance where toughness is less critical. * **Transformation Characteristics:** Has a deep hardening nature due to its high alloy content. **Typical Product Applications** Latrobe DuraTech™ M4 is specifically engineered for applications where extreme wear resistance is the primary concern. 1. **Cutting Tools:** * **End Mills & Milling Cutters:** For machining abrasive alloys, stainless steels, and hardened steels. * **Gear Hobs & Shaper Cutters:** In high-volume gear production of tough materials. * **Broaches:** For precision internal machining of nickel-based alloys. * **Reamers & Taps:** Premium-grade tools for demanding hole-making operations. * **Inserts & Blades:** For turning and planing operations on difficult-to-machine materials. 2. **Wear Parts & Industrial Components:** * **Punches, Dies, and Forming Tools:** For cold work applications involving high-strength or abrasive materials (e.g., springs, wire drawing). * **Slitters and Knives:** For cutting abrasive non-metallic materials like composites, plastics, and rubber. * **Wear Pads and Guides:** In machinery subject to severe abrasive wear. **Processing Notes** * **Machining (Annealed State):** Can be machined using carbide tools with moderate speeds and feeds. * **Heat Treatment:** Requires careful control during hardening (pre-heating is essential to prevent thermal shock) and multiple tempering cycles to achieve optimal properties and transform retained austenite. * **Grinding:** Use sharp, premium alumina or CBN wheels with light cuts, ample coolant, and proper wheel dressing to avoid thermal damage (grinding burns). **Conclusion** Latrobe DuraTech™ M4 represents the high-end of tungsten-molybdenum high-speed steel performance. Its powder metallurgy pedigree and optimized chemistry make it the material of choice when extreme wear resistance and consistent performance in punishing applications are non-negotiable. It bridges the gap between standard high-speed steels and more expensive carbide solutions, offering a cost-effective option for severe service conditions. -:- For detailed product information, please contact sales. -: Latrobe DuraTech™ M4 High Carbon Powder Metal High Speed Steel (ASTM M4) Specification Dimensions Size： Diameter 20-1000 mm Length <7212 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™ M4 High Carbon Powder Metal High Speed Steel (ASTM M4) Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe DuraTech™ M4 High Carbon Powder Metal High Speed Steel Wire (ASTM M4) -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe DuraTech™ M4 High Carbon Powder Metal High Speed Steel Wire (ASTM M4) -:- For detailed product information, please contact sales. -:

Packing of Latrobe DuraTech™ M4 High Carbon Powder Metal High Speed Steel Wire (ASTM M4) -:- 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 3683 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