AISI Type M6 High Speed Tool Steel Flange

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 M6 High Speed Tool Steel Flange Product Information -:- For detailed product information, please contact sales. -: AISI Type M6 High Speed Tool Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

AISI Type M6 High Speed Tool Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: AISI Type M6 High-Speed Tool Steel (UNS T11306)** ## **Overview** **AISI M6 (UNS T11306)** is a **high-carbon, ultra-high vanadium, cobalt-enriched molybdenum high-speed steel** that represents one of the **most wear-resistant grades** in the conventional HSS family. Occupying the extreme end of the wear-resistance spectrum, M6 is engineered for machining the most abrasive materials where tool life is limited by severe wear rather than thermal softening. Its formulation delivers an unparalleled combination of **extreme hardness and abrasion resistance** at the expense of toughness and grindability, making it a specialized solution for targeted applications. ## **1. Chemical Composition (Nominal %)** | Element | Content (%) | Primary Function | |---------|------------|------------------| | **Carbon (C)** | 0.75 - 0.85 | Provides matrix hardness and combines with vanadium to form massive carbide volume. | | **Tungsten (W)** | 3.75 - 4.50 | Contributes to hot hardness and secondary hardening. | | **Molybdenum (Mo)** | 4.50 - 5.50 | Primary hardening element; ensures deep hardenability and grain refinement. | | **Chromium (Cr)** | 3.75 - 4.50 | Enhances hardenability and provides oxidation resistance. | | **Vanadium (V)** | **4.50 - 5.50** | **Ultra-high content.** Forms an extremely high volume of hard vanadium carbides (VC), providing supreme abrasion resistance. | | **Cobalt (Co)** | **11.00 - 13.00** | **Very high content.** Dramatically elevates red-hardness and tempering resistance by solid solution strengthening of the matrix. | | **Silicon (Si)** | 0.15 - 0.40 | Deoxidizer. | | **Manganese (Mn)** | 0.15 - 0.40 | Improves hardenability. | | **Sulfur (S)** | ≤ 0.03 | Residual element. | | **Phosphorus (P)** | ≤ 0.03 | Residual element. | | **Iron (Fe)** | Balance | Base metal. | **Key Chemistry Note:** M6's identity is defined by its **two extreme alloying features: ultra-high vanadium (V) and very high cobalt (Co)**. This creates a microstructure densely packed with hard vanadium carbides, supported by a cobalt-strengthened matrix. The **carbon content is moderate** to balance carbide formation without excessive brittleness, but the overall composition pushes the limits of conventional HSS metallurgy. ## **2. Physical & Mechanical Properties** | Property | Typical Value / Condition | |----------|--------------------------| | **Density** | ~8.3 g/cm³ (0.300 lb/in³) | | **Melting Point** | ~1400°C (2550°F) | | **Thermal Conductivity** | Low (~25 W/m·K at 20°C) | | **Coefficient of Thermal Expansion** | ~11.0 × 10⁻⁶/K (20-500°C) | | **Modulus of Elasticity** | ~205 GPa (29.7 × 10⁶ psi) | | **Annealed Hardness** | 265-311 HB | | **Hardened & Tempered Hardness** | **65-68 HRC** (Can achieve 66-68 HRC with proper heat treatment). | | **Red Hardness** | **Exceptional.** Maintains cutting edge hardness at very high temperatures, superior to most HSS except for grades like M41/42/46. | | **Abrasion Resistance** | **Extreme.** Arguably the highest among standard AISI M-series HSS grades due to the massive volume of vanadium carbides. | | **Toughness** | **Very Low.** The high volume of hard, brittle carbides and the cobalt-strengthened matrix significantly reduce impact resistance. Suitable only for stable, shock-free cutting conditions. | | **Tempering Temperature** | 540-600°C (1000-1110°F), **triple tempering is mandatory**. | | **Grindability** | **Exceptionally Poor** (Approx. 15-20% of M2). One of the most difficult steels to grind. | ## **3. International Standards & Cross-References** | Standard | Designation | Notes | |----------|------------|-------| | **UNS** | T11306 | | | **AISI/ASTM (USA)** | M6 (ASTM A600) | | | **ISO (International)** | **HS 3-4-2-12** (ISO 4957) | Closest equivalent. | | **DIN (Germany)** | **~1.3247** | Approximate functional equivalent. | | **JIS (Japan)** | No direct equivalent. | | | **GB (China)** | **W4Mo3Cr4V5Co12** | Approximate composition. | | **Common Name** | **"Super Cobalt High Vanadium HSS"** | Descriptive industry term. | ## **4. Product Applications** M6 is a **specialist grade** reserved for applications where abrasive wear is the primary failure mechanism and cutting forces are stable. ### **Primary Cutting Applications:** * **Machining Highly Abrasive Materials:** * **Fiber-Reinforced Plastics (FRP):** Carbon fiber, fiberglass composites. * **Abrasive Non-Ferrous Alloys:** High-silicon aluminum (e.g., AlSi alloys for pistons), metal matrix composites (MMCs), nickel-based superalloys in finishing operations. * **Hardened Steels:** Finishing cuts on tool steels and hardened components. * **Specific Tool Types:** * **Solid carbide alternative:** **End mills, drills, and reamers** for the above materials where HSS toughness is an advantage over solid carbide. * **Broaches and gear hobs** for long production runs on abrasive materials. * **Form tools and inserts** (often as brazed tips) for turning and milling. ### **Non-Cutting Wear Applications:** * **Cold work tooling** for forming abrasive materials (e.g., powder compaction punches). * **Wear parts** in severe abrasive environments, such as guides, nozzles, and slats. ### **Performance Context:** M6 is selected **not for general-purpose machining, but as a problem-solver for specific, severe wear problems.** Its use is justified when tools made from grades like M2, M4, or even M42 wear out too quickly in abrasive conditions, and the application cannot tolerate the brittleness of carbide. ## **5. Processing & Heat Treatment Guidelines** **Processing M6 requires expertise and specialized equipment due to its high alloy content.** ### **Forging:** * Heat slowly and uniformly to **1080-1130°C (1975-2065°F)**. * **Do not forge below 950°C (1740°F).** * Cool **very slowly** in an insulating medium or furnace immediately after forging to prevent cracking. ### **Annealing:** * Heat to **870-900°C (1600-1650°F)**, hold, then furnace cool very slowly (≤10°C/hour to 500°C). * Expected annealed hardness: 265-311 HB. ### **Hardening (Critical):** 1. **Preheat:** **Two-stage preheating is essential:** 550-600°C (1020-1110°F) and then 850-900°C (1560-1650°F). 2. **Austenitize:** **1170-1200°C (2140-2190°F).** Precise temperature control is vital to dissolve sufficient carbides without causing grain growth. 3. **Quench:** In salt bath, vacuum furnace with high-pressure gas (N₂/Ar), or oil for simple shapes. ### **Tempering (Most Critical Step):** * **Temper immediately** upon reaching hand-warm temperature (40-50°C). * **Triple temper at 540-560°C (1005-1040°F)** for 2+ hours each cycle. A fourth temper may be beneficial. * **Cryogenic treatment** (e.g., -80°C to -196°C) between tempers is highly recommended to maximize transformation of retained austenite and achieve ultimate hardness and dimensional stability. ## **6. Machinability & Grindability** * **Machinability (Annealed):** **Very Poor** (~30% of M2). Requires rigid setups, positive rake tools, low speeds/feeds, and ample coolant. * **Grindability:** **Extremely Poor.** This is the major drawback of M6. * **Wheel Selection: Diamond or CBN (Cubic Boron Nitride) wheels are essentially mandatory** for efficient grinding. * **Technique:** Use light infeeds, high wheel speeds, and copious coolant to avoid thermal damage (grinding burns) which can cause micro-cracks. --- **Disclaimer:** AISI M6 is a highly specialized, difficult-to-process premium tool steel. Its successful implementation requires extensive metallurgical knowledge, precise heat treatment facilities, and careful application engineering. The information provided is for reference only. Always consult the material producer's certified technical data sheets and engage qualified specialists for heat treatment and tool design. Performance will vary based on manufacturing quality (e.g., ESR/VAR remelting is common for M6) and exact processing parameters. -:- For detailed product information, please contact sales. -: AISI Type M6 High Speed Tool Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6737 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 M6 High Speed Tool Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI Type M6 High Speed Tool Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI Type M6 High Speed Tool Steel Flange -:- For detailed product information, please contact sales. -:

Packing of AISI Type M6 High Speed Tool Steel Flange -:- 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 3208 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