Latrobe,Double Six™ ASTM M2 High Speed 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. -: Latrobe Double Six™ ASTM M2 High Speed Steel Flange Product Information -:- For detailed product information, please contact sales. -: Latrobe Double Six™ ASTM M2 High Speed Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Latrobe Double Six™ ASTM M2 High Speed Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Datasheet: Latrobe Double Six™ ASTM M2 High Speed Steel** ## **1. Product Overview** **Latrobe Double Six™ ASTM M2** is a premier, high-performance tungsten-molybdenum high-speed steel (HSS) representing the global industry standard for cutting tool applications. Manufactured under Latrobe's stringent quality controls, the "Double Six" designation signifies its capability to achieve and maintain a hardness of **66 HRC**—a benchmark for superior wear resistance and cutting edge integrity. As the most widely used HSS grade worldwide, M2 offers an optimal balance of high hardness, excellent wear resistance, good toughness, and reasonable cost, making it the universal choice for a vast range of cutting tools and wear components. ## **2. Key Advantages & Characteristics** * **Superior Hardness & Wear Resistance:** Achieves a nominal hardness of 64-66 HRC after proper heat treatment, providing exceptional resistance to abrasive wear and edge dulling. * **Excellent Red (Hot) Hardness:** Maintains cutting efficiency at elevated temperatures (up to approximately 540°C / 1000°F), a defining characteristic of high-speed steels. * **Good Toughness:** Offers better impact and shock resistance compared to higher-cobalt or high-vanadium super HSS grades, reducing chipping in interrupted cuts. * **Superior Grindability:** While demanding proper technique, it offers better grindability than higher-alloyed grades like M4 or M42, facilitating tool fabrication and sharpening. * **Exceptional Cost-to-Performance Ratio:** Delivers the best overall performance for the price, establishing it as the most economical choice for high-performance cutting. * **Proven Reliability & Consistency:** Latrobe's manufacturing ensures uniform carbide distribution and chemistry, guaranteeing batch-to-batch consistency. ## **3. Chemical Composition (ASTM A600 Specification)** ### **3.1 Standard Composition (wt.%)** | Element | ASTM M2 Range | Typical Double Six™ M2 Value | Metallurgical Function | | :--- | :--- | :--- | :--- | | **Carbon (C)** | 0.78 - 0.88 | 0.85 | Primary hardness; combines with carbide formers (W, Mo, V, Cr). | | **Tungsten (W)** | 5.50 - 6.75 | 6.40 | Primary contributor to hot hardness and wear resistance. | | **Molybdenum (Mo)** | 4.50 - 5.50 | 5.00 | Enhances hardenability and hot hardness; partly substitutes for tungsten. | | **Chromium (Cr)** | 3.75 - 4.50 | 4.10 | Provides hardenability and improves wear/oxidation resistance. | | **Vanadium (V)** | 1.75 - 2.20 | 2.00 | Forms extremely hard vanadium carbides (VC) for superior abrasion resistance. | | **Cobalt (Co)** | ≤ 0.50 | 0.25 (Residual) | (Not a primary alloy in standard M2; present in modified grades like M35 or M42). | | **Manganese (Mn)** | ≤ 0.40 | 0.30 | Deoxidizer and aids hardenability. | | **Silicon (Si)** | ≤ 0.40 | 0.25 | Deoxidizer. | | **Sulfur (S)** | ≤ 0.030 | 0.005 | Impurity control; can be enhanced for improved machinability (M2S). | | **Phosphorus (P)** | ≤ 0.030 | 0.015 | Impurity control. | ### **3.2 Latrobe Double Six™ Quality Enhancements** * **Carbide Uniformity:** Controlled solidification and hot working ensure fine, evenly distributed primary carbides, crucial for edge strength and grindability. * **Decarburization Control:** Tightly controlled processes minimize surface decarburization, preserving the full hardened cross-section. * **Consistent Response:** Predictable and uniform response to heat treatment. ## **4. Physical & Mechanical Properties** ### **A. Annealed Condition (Typical Delivery State)** * **Hardness:** 207 - 255 HB (Brinell) * **Microstructure:** Spheroidized carbides in a ferritic matrix, optimized for machinability. ### **B. Hardened & Tempered Condition (Properly Heat Treated)** * **Hardness:** **64 - 66 HRC** (Rockwell C) * **Transverse Rupture Strength:** ~ 3,500 - 4,100 MPa (varies with heat treatment and section size) * **Compressive Strength:** ~ 3,000 - 3,600 MPa * **Hot Hardness:** Retains ~ 58-60 HRC at **540°C (1000°F)**. * **Modulus of Elasticity:** ~ 215 - 225 GPa ### **C. Thermal Properties** * **Thermal Conductivity:** ~ 24 W/m·K (at 20°C) * **Coefficient of Thermal Expansion:** ~ 11.5 x 10^-6 /°C (20-100°C) * **Critical Temperatures:** Ac₁ ~ 815°C, Ac₃ ~ 870°C, M_s ~ 190°C ## **5. Heat Treatment Guidelines (Critical for Performance)** Proper heat treatment is essential to achieve the "Double Six" properties. **1. Preheating:** * **Stage 1:** 650 - 700°C (1200 - 1290°F) * **Stage 2:** 800 - 850°C (1470 - 1560°F) * *Soak time: 20-40 minutes per stage to ensure thermal equilibrium.* **2. Austenitizing:** * **Temperature:** **1190 - 1220°C (2175 - 2230°F)**. Precise control is critical. * **Atmosphere:** Salt bath, vacuum, or controlled atmosphere to prevent decarburization. * **Soak Time:** Short! Typically **2 - 5 minutes** after reaching temperature (depends on section size). Over-soaking causes grain growth and brittleness. **3. Quenching:** * **Medium:** Oil, salt bath (marquenching around 500-600°C), or high-pressure gas. * **Goal:** Rapid cooling to room temperature to form martensite. **4. Tempering (MANDATORY & MULTIPLE):** * **Temperature:** **540 - 570°C (1000 - 1060°F)**. This range triggers **secondary hardening**. * **Cycles:** **Minimum of 2 cycles**, with 3 cycles strongly recommended. Each cycle: 1-2 hours at temperature, air cool to room temperature between cycles. * **Result:** Tempering transforms retained austenite, relieves stresses, and precipitates fine alloy carbides, achieving peak hardness (64-66 HRC) and toughness. ## **6. International Standards & Specifications** * **ASTM A600:** Type M2 (Primary U.S. Standard) * **UNS:** T11302 * **ISO 4957:** **HS6-5-2** (International designation: 6%W, 5%Mo, 2%V) * **DIN / EN:** **1.3343** (German/European Material Number) * **JIS G4403:** **SKH51** (Japanese Standard) * **GB/T 9943:** **W6Mo5Cr4V2** (Chinese Standard) * **AMS:** 6497 (Aerospace Material Specification) ## **7. Product Applications** Latrobe Double Six™ M2 is the workhorse material for metal cutting tools across all industries. * **Cutting Tools (Primary Use):** * **Drills:** Twist drills, step drills, core drills, gun drills. * **End Mills:** General-purpose and high-performance end mills, slot drills. * **Taps & Dies:** Machine taps, hand taps, thread forming taps, threading dies. * **Reamers:** Chucking reamers, shell reamers, adjustable reamers. * **Broaches:** Surface and internal broaches. * **Gear Cutters:** Hobs, shaper cutters, shaving cutters. * **Saw Blades:** Metal cutting band saw and hacksaw blades. * **Turning Tools:** Single-point tools, form tools, inserts (brazed or clamped). * **Wear Parts & Forming Tools:** * **Punches & Dies:** For blanking, piercing, and forming. * **Shear Blades:** For cutting metal, plastic, or paper. * **Machine Components:** Wear plates, guide rails, cam followers, and bearings in high-wear applications. * **Knives:** For cutting non-metallic materials like plastics and composites. ## **8. Grinding & Machining Considerations** * **Grinding (Hardened State):** Use sharp, open-structure aluminum oxide (Al₂O₃) or cubic boron nitride (CBN) wheels. Use ample coolant to avoid "grinding burn" (local overheating and tempering). * **Machining (Annealed State):** Machinability is fair-to-difficult. Use carbide tooling with moderate speeds and feeds. Pre-hardening machining is standard practice. --- **Disclaimer:** This datasheet provides general information based on standard industry data for ASTM M2 high-speed steel. Optimal performance requires precise, component-specific heat treatment. For critical applications, **consultation with Latrobe's technical support team is strongly recommended** to ensure proper material selection and processing. **Latrobe Specialty Metals – Forging Performance Through Advanced Metallurgy.** -:- For detailed product information, please contact sales. -: Latrobe Double Six™ ASTM M2 High Speed Steel Specification Dimensions Size： Diameter 20-1000 mm Length <5331 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 Double Six™ ASTM M2 High Speed Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Latrobe Double Six™ ASTM M2 High Speed Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Latrobe Double Six™ ASTM M2 High Speed Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Latrobe Double Six™ ASTM M2 High Speed 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 1802 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