Bohler-Uddeholm,BÖHLER S692/S693 MICROCLEAN® PM M4 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. -: Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel Flange Product Information -:- For detailed product information, please contact sales. -: Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel Product Information -:- For detailed product information, please contact sales. -: # **Böhler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel** ## **Product Overview** **BÖHLER S692/S693 MICROCLEAN®** are premium **powder metallurgy (PM) high-speed steels** based on the AISI M4 chemistry, representing two distinct variants optimized through Böhler-Uddeholm's proprietary **MICROCLEAN®** manufacturing technology. This advanced PM process creates an ultra-fine, homogeneous microstructure with perfectly distributed carbides, eliminating the segregation and large carbide clusters inherent in conventional high-speed steel production. These grades deliver **exceptional wear resistance, high hot hardness, and superior grindability**, specifically engineered to bridge the performance gap between standard high-speed steels and more expensive super-high-speed steels. **Key Distinction: S692 vs. S693** * **S692:** The **standard high-performance variant**, offering an optimal balance of wear resistance and toughness for general demanding applications. * **S693:** An **enhanced wear resistance variant** with a higher carbon content, providing maximum abrasive wear resistance for the most severe cutting conditions, albeit with a slight compromise in toughness. --- ## **1. Key Characteristics & Advantages** * **Exceptional Wear Resistance:** Superior to conventional M4 and comparable to M42 in many applications, due to the fine, uniform distribution of hard vanadium carbides enabled by PM technology. * **Excellent Hot Hardness (Red Hardness):** Maintains cutting edge integrity at elevated temperatures (up to 550-600°C), typical of high molybdenum-vanadium high-speed steels. * **Superior Grindability:** Significantly better than conventional high-speed steels of similar wear resistance (especially S692), reducing manufacturing costs, shortening lead times, and lowering the risk of grinding burns or cracks. * **High Toughness:** Offers better toughness than conventionally produced steels of equivalent hardness and wear resistance, thanks to the homogeneous, segregation-free MICROCLEAN® microstructure. * **Isotropic Properties:** Uniform mechanical behavior in all directions, ensuring predictable performance in complex tool geometries (e.g., drills, end mills). * **Consistent Performance:** Batch-to-batch consistency in heat treatment response and cutting performance. * **Good Dimensional Stability:** Minimal and predictable distortion during hardening. --- ## **2. Chemical Composition (Weight %)** | Element | Carbon (C) | Tungsten (W) | Molybdenum (Mo) | Chromium (Cr) | Vanadium (V) | | :--- | :---: | :---: | :---: | :---: | :---: | | **S692** | **1.30 - 1.45** | **5.25 - 6.50** | **4.25 - 5.50** | **3.75 - 4.50** | **3.75 - 4.50** | | **S693** | **1.45 - 1.60** | **5.25 - 6.50** | **4.25 - 5.50** | **3.75 - 4.50** | **3.75 - 4.50** | **Alloying Rationale & PM Advantage:** * **High Vanadium (4.0%):** The key to wear resistance. Forms extremely hard vanadium carbides (VC). In conventional M4, these carbides can be large and clustered; the PM process refines them into a fine, uniform dispersion. * **High Carbon:** Balances the vanadium to form the hard carbides. S693's higher carbon further increases carbide volume for maximum wear resistance. * **Molybdenum & Tungsten (5-6% each):** Provide the classic high-speed steel matrix for hot hardness and secondary hardening. * **MICROCLEAN® Technology:** The gas atomization and hot isostatic pressing (HIP) process ensures: * No carbide networks or segregation. * Ultra-low oxygen and sulfur content. * A fine, spherical powder microstructure that translates to isotropic properties. --- ## **3. Physical & Mechanical Properties** ### **Physical Properties:** * **Density:** ~8.10 g/cm³ * **Thermal Conductivity:** ~24 W/(m·K) at 20°C * **Modulus of Elasticity:** ~215 GPa * **Coefficient of Thermal Expansion:** ~11.0 x 10⁻⁶/K (20-400°C) ### **Heat Treatment & Mechanical Data:** * **Soft Annealed Hardness:** ~260 HBW * **Austenitizing Temperature:** 1180 - 1220°C (2155 - 2230°F) * **Quenching Medium:** Salt bath, vacuum/pressurized gas (2-5 bar), or oil. * **Tempering:** **Multiple tempering cycles (2-3) are mandatory.** Temperature range: 540 - 580°C (1005 - 1075°F). * **Achievable Hardness:** * **S692:** **64 - 67 HRC** (Typically operated at 65-66 HRC) * **S693:** **65 - 68 HRC** (Typically operated at 66-67 HRC for max wear) * **Hot Hardness (600°C):** ~57-59 HRC * **Transverse Rupture Strength:** ~3200 - 3500 MPa * **Impact Toughness:** S692 > S693, but both are superior to conventional M4 at equivalent hardness. --- ## **4. Primary Applications** These steels are designed for high-performance cutting tools and demanding cold work applications requiring a superior balance of wear resistance, toughness, and grindability. * **High-Performance Cutting Tools:** * **End mills, drills, and reamers** for machining stainless steels, high-temperature alloys (Inconel), and hardened steels (45-55 HRC). * **Gear cutting tools** (hobs, shaper cutters) for hard finishing. * **Thread rolling dies** and form tools. * **Precision Cold Work Tooling:** * **Blanking and punching dies** for abrasive materials (electrical steel, high-strength steel). * **Cold forming punches and dies.** * **Powder compaction tools.** * **Industrial Knives & Wear Parts:** For cutting abrasive non-metallics or as wear-resistant components. --- ## **5. Relevant International Standards & Comparable Grades** S692/S693 are proprietary PM embodiments of the AISI M4 standard, with S693 being a high-carbon variant. | Standard | Grade / Designation | Similarity / Key Difference | | :--- | :--- | :--- | | **AISI / ASTM A600** | **M4 (Conventional & PM)** | S692/S693 are the premium PM MICROCLEAN® versions. S693 aligns with "M4 High Carbon". | | **ISO 4957** | **HS6-5-4** | The standard designation for this chemistry. | | **DIN / Werkstoff** | **1.3344 (HS6-5-4)** | The European standard grade. | | **JIS G4403** | **SKH54** | The Japanese M4 equivalent. | | **Other PM HSS** | **CPM M4** | The main competitor PM M4 grade. S692/S693 offer Böhler-Uddeholm's specific MICROCLEAN® quality and property balance. | | **Higher Alloy HSS** | **M42, A11 (T15)** | These are cobalt-bearing super HSS grades. S692/S693 offer superior wear resistance to M42 but lower hot hardness than cobalt grades. | **Selection Guide:** * **Choose S692** for applications requiring the best **overall balance of wear resistance, toughness, and grindability** (e.g., complex end mills, demanding drills). * **Choose S693** when **maximum abrasive wear resistance is the absolute priority** and some toughness can be sacrificed (e.g., certain form tools, severe blanking applications). --- ## **6. Processing & Fabrication Guidelines** * **Supply Form:** Round bars, square bars, and flat stock. * **Machining:** Must be machined in the soft-annealed condition. Use sharp carbide tools. The material is abrasive; expect higher tool wear than when machining lower-alloy steels. * **Grinding:** **Excellent grindability for their performance level**, especially S692. This is a key selling point. Use aluminum oxide or CBN wheels with ample coolant. * **EDM:** Suitable. A stress-relieving temper (~550°C) is recommended after EDM. * **Heat Treatment:** Requires precise, controlled atmosphere or vacuum heat treatment. 1. **Preheating:** 800-850°C and 1050-1100°C is critical. 2. **Austenitizing:** High temperature requires precise control. 3. **Quenching:** Pressurized gas quenching is preferred for complex tools to minimize distortion. 4. **Tempering:** **Triple tempering is standard practice.** Cryogenic treatment (-196°C) between tempers is highly beneficial for maximizing hardness and dimensional stability. * **Surface Treatment:** Excellent substrates for PVD coatings (TiAlN, AlCrN). The combination provides a synergistic effect for high-performance cutting tools. --- ## **7. Conclusion** **BÖHLER S692/S693 MICROCLEAN®** represents the **optimal modernization of the classic M4 high-speed steel**, leveraging powder metallurgy to overcome its traditional limitations. They deliver performance that often matches or exceeds more expensive cobalt-bearing grades for wear-centric applications, while maintaining significantly better grindability and toughness. For tool manufacturers seeking to upgrade from conventional M2, M35, or even M42 steels due to wear issues—but who are challenged by the grinding difficulties of conventional M4 or high-vanadium steels—the S692/S693 MICROCLEAN® grades offer a compelling solution. They provide a direct path to longer tool life and higher productivity in demanding machining and cold work operations, combining the proven M4 alloy design with the processing and performance benefits of state-of-the-art PM technology. The choice between S692 and S693 allows precise tuning of properties to match the specific failure mode of the application. -:- For detailed product information, please contact sales. -: Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel Specification Dimensions Size： Diameter 20-1000 mm Length <6901 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. -: Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 High Speed Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Bohler-Uddeholm BÖHLER S692/S693 MICROCLEAN® PM M4 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 3372 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