AISI Type M44 Molybdenum High Speed Tool Steel Flange (UNS T11344)

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 M44 Molybdenum High Speed Tool Steel Flange (UNS T11344) Product Information -:- For detailed product information, please contact sales. -: AISI Type M44 Molybdenum High Speed Tool Steel Flange (UNS T11344) Synonyms -:- For detailed product information, please contact sales. -:

AISI Type M44 Molybdenum High Speed Tool Steel (UNS T11344) Product Information -:- For detailed product information, please contact sales. -: # **Product Introduction: AISI Type M44 Molybdenum High Speed Tool Steel (UNS T11344)** ## **Overview** AISI M44 (UNS T11344) is a premium-grade **cobalt-enriched molybdenum high-speed steel** belonging to the "super high-speed steel" category. Characterized by an exceptional combination of **ultra-high hardness**, **superior red-hardness**, and **excellent abrasion resistance**, M44 is engineered for the most demanding machining applications where standard high-speed steels (like M2 or M42) reach their performance limits. Its balanced chemistry provides optimal performance in severe cutting conditions involving high temperatures and abrasive materials. ## **1. Chemical Composition (Nominal %)** | Element | Content (%) | Primary Function | |---------|------------|------------------| | **Carbon (C)** | 1.10 - 1.20 | Provides matrix hardness and carbide formation | | **Tungsten (W)** | 5.00 - 5.75 | Enhances hot hardness and wear resistance | | **Molybdenum (Mo)** | 5.75 - 6.50 | Primary hardening element, improves hardenability | | **Chromium (Cr)** | 3.75 - 4.50 | Increases hardenability and wear resistance | | **Vanadium (V)** | 1.75 - 2.25 | Forms hard vanadium carbides for abrasion resistance | | **Cobalt (Co)** | 7.75 - 8.75 | **Critical element** - dramatically increases red-hardness and tempering resistance | | **Silicon (Si)** | 0.15 - 0.40 | Deoxidizer during steelmaking | | **Manganese (Mn)** | 0.15 - 0.40 | Improves hardenability and deoxidization | | **Sulfur (S)** | ≤ 0.03 | Residual element (controlled for purity) | | **Phosphorus (P)** | ≤ 0.03 | Residual element (controlled for purity) | | **Iron (Fe)** | Balance | Base metal | **Key Chemistry Note:** M44 features a **slightly lower vanadium** content compared to M43, which improves grindability while maintaining excellent wear resistance. The **balanced tungsten-molybdenum ratio** provides optimal carbide distribution for both toughness and hardness. ## **2. Physical & Mechanical Properties** | Property | Typical Value / Condition | |----------|--------------------------| | **Density** | 8.10 - 8.15 g/cm³ (0.293 lb/in³) | | **Melting Point** | Approximately 1415°C (2575°F) | | **Thermal Conductivity** | ~28 W/m·K at 20°C (relatively low, typical for high-alloy HSS) | | **Coefficient of Thermal Expansion** | 11.2 × 10⁻⁶/K (20-600°C) | | **Modulus of Elasticity** | 205-210 GPa (29.7-30.5 × 10⁶ psi) | | **Annealed Hardness** | 241-277 HB | | **Hardened & Tempered Hardness** | **66-69 HRC** (typically optimized at 67-68 HRC) | | **Red Hardness** | Maintains hardness up to **620°C (1150°F)** - superior to standard HSS grades | | **Abrasion Resistance** | **Excellent** - enhanced by vanadium carbides | | **Toughness** | **Moderate** - better than M43 due to lower carbon and vanadium content | | **Tempering Temperature Range** | 540-600°C (1000-1110°F), typically triple-tempered | ## **3. International Standards & Cross-References** | Standard | Designation | |----------|------------| | **UNS** | T11344 | | **AISI/ASTM (USA)** | M44 (ASTM A600) | | **ISO (International)** | **HS 7-5-2-8** (ISO 4957: Tool steels) | | **DIN (Germany)** | **1.3246** | | **JIS (Japan)** | **SKH58** (closest equivalent) | | **GB (China)** | **W7Mo5Cr4V2Co8** (approximate) | | **AFNOR (France)** | **HS 7-5-2-8** | | **SS (Sweden)** | **2728** | ## **4. Product Applications** ### **Primary Cutting Applications:** - **High-performance drills and end mills** for machining superalloys (Inconel, Hastelloy, Waspaloy) - **Premium taps and thread mills** for hard materials (hardened steels, stainless steels) - **Broaches and gear hobs** requiring extended tool life - **Form tools and cutters** for abrasive non-ferrous materials - **Single-point turning tools** for high-speed machining of high-temperature alloys ### **Specialized Applications:** - **Cold work tooling** requiring exceptional wear resistance (punches, dies) - **Blades for cutting composite and abrasive materials** - **High-temperature forming tools** - **Wear parts in severe service conditions** ### **Performance Advantage:** M44 offers **15-30% longer tool life** compared to standard cobalt HSS grades (like M35) when machining difficult materials, with **superior edge retention** at elevated temperatures. Its balanced chemistry provides better toughness than M43 while maintaining excellent hot hardness. ## **5. Processing & Heat Treatment Guidelines** ### **Forging:** - Heat uniformly to **1050-1150°C (1920-2100°F)** - Forge with moderate blows; do not forge below **925°C (1700°F)** - Cool slowly after forging (preferably in furnace or insulating medium) ### **Annealing:** - Heat to **840-870°C (1545-1600°F)**, hold sufficiently, then furnace cool slowly to **540°C (1000°F)** - Expected annealed hardness: 241-277 HB - Spheroidize anneal for best machinability ### **Hardening (Critical Process):** 1. **Preheat**: 800-850°C (1470-1560°F) - ESSENTIAL to prevent cracking 2. **Austenitize**: **1190-1220°C (2175-2225°F)** - temperature control is critical 3. **Quench**: In salt bath, oil, or controlled atmosphere furnace 4. **Cool to room temperature** before tempering ### **Tempering:** - **Immediate tempering** required after quenching - Temperature: **540-590°C (1005-1095°F)** - **Double or triple temper** (2 hours minimum per cycle) - Typical final hardness: 67-68 HRC ### **Stress Relieving:** - After rough machining: Heat to 650-675°C (1200-1245°F), hold 1-2 hours, slow cool ## **6. Machinability & Grindability** | Process | Relative Rating (Compared to M2 = 100%) | Notes | |---------|----------------------------------------|-------| | **Machinability (Annealed)** | 55-60% | More difficult than standard HSS due to hardness | | **Grindability** | 40-45% | Difficult - requires proper wheel selection and coolant | | **EDM Performance** | Good | Standard EDM parameters apply | **Grinding Recommendations:** Use aluminum oxide or CBN wheels with light cuts and ample coolant. Avoid burning which can cause micro-cracking. ## **7. Quality Assurance & Standards** - **Microcleanliness**: Typically supplied to ASTM E45 Method A with controlled inclusion ratings - **Decarburization**: Controlled per AMS 2301 or customer specifications - **Ultrasonic Testing**: Available for critical applications to detect internal flaws - **Hardness Uniformity**: Typically within ±1 HRC point across cross-section --- **Disclaimer:** The information provided is for reference purposes. Specific processing parameters and applications should be verified with the material supplier's technical data sheets and qualified metallurgical expertise. Performance characteristics may vary based on manufacturing processes, heat treatment, and application conditions. -:- For detailed product information, please contact sales. -: AISI Type M44 Molybdenum High Speed Tool Steel (UNS T11344) Specification Dimensions Size： Diameter 20-1000 mm Length <6730 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 M44 Molybdenum High Speed Tool Steel (UNS T11344) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI Type M44 Molybdenum High Speed Tool Steel Flange (UNS T11344) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI Type M44 Molybdenum High Speed Tool Steel Flange (UNS T11344) -:- For detailed product information, please contact sales. -:

Packing of AISI Type M44 Molybdenum High Speed Tool Steel Flange (UNS T11344) -:- 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 3201 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