AISI Type M47 Molybdenum High Speed Tool Steel Flange (UNS T11347)

1,We Manufacturing processes are primarily classified into four types: 1:Forging, 2:Casting, 3:Cutting, 4:Rolling. 2,We can manufacture in accordance with these standards. Standards: GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards). Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others. The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160. The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500. Flange Classification 1. **According to Chemical Industry Standards:** Flanges are classified as follows: Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)). 2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows: Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation). 3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows: Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange. 4. **According to Connection Method/Type:** Flanges are classified as follows: Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc. 5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges. 6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges. A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts." -:- For detailed product information, please contact sales. -: AISI Type M47 Molybdenum High Speed Tool Steel Flange (UNS T11347) Product Information -:- For detailed product information, please contact sales. -: AISI Type M47 Molybdenum High Speed Tool Steel Flange (UNS T11347) Synonyms -:- For detailed product information, please contact sales. -:

AISI Type M47 Molybdenum High Speed Tool Steel (UNS T11347) Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: AISI Type M47 Molybdenum High-Speed Tool Steel (UNS T11347)** ## **Overview** AISI M47 (UNS T11347) is a **high-performance, high-carbon, high-vanadium cobalt-bearing molybdenum high-speed steel** that represents one of the most wear-resistant grades in the conventional high-speed steel family. Often classified as a **"Super High-Speed Steel"** or **"Premium HSS"**, M47 is specifically engineered to deliver exceptional abrasion resistance combined with excellent hot hardness. This unique combination makes it particularly suitable for machining highly abrasive materials and for applications demanding extended tool life under severe cutting conditions where standard HSS grades fail prematurely. The defining characteristic of M47 is its **elevated carbon and vanadium content**, which promotes the formation of a high volume of hard vanadium carbides, resulting in superior wear resistance. The **moderate cobalt content** further enhances its ability to maintain hardness at elevated temperatures, making it a balanced choice for both abrasive and thermally demanding applications. ## **1. Chemical Composition (Nominal %)** The chemical composition of AISI M47 is carefully balanced to maximize both abrasion resistance and red-hardness. | Element | Content (%) | Primary Function | |---------|------------|------------------| | **Carbon (C)** | 1.05 - 1.15 | Forms hard carbides with other alloying elements; provides matrix hardness. | | **Tungsten (W)** | 1.50 - 2.00 | Contributes to secondary hardening and hot hardness. | | **Molybdenum (Mo)** | 8.50 - 9.50 | Primary hardening element; provides solid solution strengthening and forms carbides. | | **Chromium (Cr)** | 3.50 - 4.00 | Enhances hardenability, wear resistance, and provides mild oxidation resistance. | | **Vanadium (V)** | 1.15 - 1.35 | Forms extremely hard vanadium carbides (VC) for superior abrasion resistance. | | **Cobalt (Co)** | 4.75 - 5.25 | Enhances red-hardness and tempering resistance; does not form carbides but strengthens the matrix. | | **Silicon (Si)** | 0.15 - 0.40 | Acts as a deoxidizer during steelmaking. | | **Manganese (Mn)** | 0.15 - 0.40 | Improves hardenability and acts as a deoxidizer. | | **Sulfur (S)** | ≤ 0.03 | Typically kept low unless specified for improved machinability. | | **Phosphorus (P)** | ≤ 0.03 | Impurity kept low to prevent embrittlement. | | **Iron (Fe)** | Balance | Base metal. | **Key Chemistry Note:** M47 features a **higher molybdenum and moderate cobalt content** compared to many standard HSS grades. This specific balance aims to provide a cost-effective alternative to ultra-high-cobalt grades (like M42) while still offering significant performance improvements over cobalt-free grades like M2. The **carbon-to-vanadium ratio** is optimized to ensure adequate hard carbide formation without excessive compromise on toughness. ## **2. Physical & Mechanical Properties** | Property | Typical Value / Condition | |----------|--------------------------| | **Density** | ~8.10 g/cm³ (0.292 lb/in³) | | **Melting Point** | ~1420°C (2590°F) | | **Thermal Conductivity** | ~27 W/m·K at 20°C (relatively low, typical for high-alloy steels) | | **Coefficient of Thermal Expansion** | ~11.3 x 10⁻⁶/K (20-600°C) | | **Modulus of Elasticity** | ~205 GPa (29.7 x 10⁶ psi) | | **Hardness (Annealed)** | 235-269 HB | | **Hardness (Hardened & Tempered)** | **65-67 HRC** (Commonly optimized at 66-67 HRC) | | **Tempering Temperature** | 540-600°C (1000-1110°F), typically triple-tempered. | | **Hot Hardness** | **Very Good.** Superior to M2 and M7; maintains hardness effectively at moderate to high cutting temperatures. | | **Abrasion Resistance** | **Excellent,** due to the significant volume of vanadium carbides. | | **Toughness** | **Moderate.** Higher than ultra-high-cobalt/high-vanadium grades (like M46) but lower than more balanced grades like M2. | | **Grindability** | **Fair to Difficult** (approximately 40-50% relative to M2). Requires proper wheel selection and technique. | ## **3. International Standards & Cross-References** AISI M47 is recognized under several international standards, though it is less common than M2 or M42. | Standard | Designation | |----------|------------| | **UNS** | T11347 | | **AISI (USA)** | M47 | | **ASTM (USA)** | A600: M47 | | **ISO (International)** | **HS 2-9-2-5** (ISO 4957: Tool steels) | | **DIN (Germany)** | **~1.3244** (Note: Not a perfect 1:1 match; this is a close approximation) | | **JIS (Japan)** | No direct common equivalent. | | **GB (China)** | **W2Mo9Cr4VCo5** (Approximate functional equivalent) | ## **4. Product Applications** M47 is designed for applications that demand a combination of good hot hardness and superior wear resistance, often where cutting speeds and feeds are high, and workpiece materials are abrasive. **Primary Applications Include:** * **Cutting Tools for Abrasive Materials:** * **Drills, end mills, and taps** for machining cast irons (especially chilled or abrasion-resistant), high-silicon aluminum alloys, fiber-reinforced plastics (FRP), and some superalloys. * **Broaches and gear hobs** for production environments where long tool life between regrinds is critical. * **Form tools and milling cutters** for operations involving interrupted cuts on abrasive workpieces. * **Other Tooling and Wear Parts:** * **Cold work punches and dies** for forming abrasive materials. * **Shear blades and slitter knives** for cutting metals, paper, or plastics. * **Wear plates, guides, and rolls** in machinery subject to abrasive wear. **Key Advantage:** M47 offers a **favorable balance between performance and cost**. It provides significantly better wear resistance and hot hardness than M2 or M7, making it suitable for more demanding applications, while being more economical than ultra-high-performance grades like M42 or M46. It is an excellent choice for **general-purpose severe-duty machining** where the extreme red-hardness of higher-cobalt grades is not strictly necessary. ## **5. Processing & Heat Treatment Guidelines** * **Forging:** Heat slowly and uniformly to **1050-1150°C (1920-2100°F)**. Forge with controlled blows. Do not forge below **925°C (1700°F)**. Cool slowly after forging in an insulating medium or furnace. * **Annealing:** Heat to **840-870°C (1545-1600°F)**, hold for sufficient time (1-2 hours per inch of thickness), then furnace cool slowly to **540°C (1000°F)** or below. Typical annealed hardness: 235-269 HB. * **Hardening (Austenitizing):** 1. **Preheating is critical:** Preheat at **800-850°C (1470-1560°F)** to minimize thermal stress. 2. **Austenitizing Temperature:** **1175-1200°C (2150-2190°F)**. Soak time is typically 2-5 minutes per inch of cross-section after the entire part reaches temperature. 3. **Quenching:** Quench in salt bath, oil, or in a controlled atmosphere furnace with forced gas cooling. * **Tempering:** **Must be tempered immediately** after quenching to room temperature. Temper at **540-590°C (1000-1095°F)** for at least 2 hours per cycle. **Double or triple tempering** is strongly recommended to ensure complete transformation of retained austenite and to achieve maximum hardness, dimensional stability, and toughness. * **Stress Relieving:** After rough machining, stress relieve at **600-650°C (1110-1200°F)** for 1-2 hours, followed by slow cooling. ## **6. Machinability & Grindability** * **Machinability (Annealed State):** Approximately 50-55% of that for AISI W1 (water-hardening steel). It is more difficult to machine than M2 due to its higher alloy content. * **Grindability:** Rated as **fair to difficult**. The vanadium carbides are hard and can rapidly dull inappropriate grinding wheels. * **Recommended:** Use aluminum oxide (Al₂O₃) or cubic boron nitride (CBN) wheels with an open structure. Use light cuts, ample coolant, and maintain sharp dressing of the wheel to prevent burning and micro-cracking. ## **7. Quality Considerations** * **Microcleanliness:** High-quality M47 is typically produced to strict cleanliness standards (e.g., ASTM E45) to minimize non-metallic inclusions that could act as stress raisers. * **Decarburization:** Material is often supplied with a decarburization-free condition per specifications like AMS 2301 (Aerospace Material Specification) for critical applications. * **Carbide Distribution:** A uniform distribution of fine carbides is essential for consistent performance and grindability. --- **Disclaimer:** The information provided is for general reference and educational purposes. Specific processing parameters, heat treatment cycles, and application suitability must be determined based on the exact material condition, manufacturer's specifications, and end-use requirements. Always consult the material supplier's technical data sheets and engage qualified metallurgical expertise for critical applications. -:- For detailed product information, please contact sales. -: AISI Type M47 Molybdenum High Speed Tool Steel (UNS T11347) Specification Dimensions Size： Diameter 20-1000 mm Length <6733 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. -: AISI Type M47 Molybdenum High Speed Tool Steel (UNS T11347) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI Type M47 Molybdenum High Speed Tool Steel Flange (UNS T11347) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI Type M47 Molybdenum High Speed Tool Steel Flange (UNS T11347) -:- For detailed product information, please contact sales. -:

Packing of AISI Type M47 Molybdenum High Speed Tool Steel Flange (UNS T11347) -:- 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 Flange 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 3204 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