AISI 50B46H 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 50B46H Steel Flange Product Information -:- For detailed product information, please contact sales. -: AISI 50B46H Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

AISI 50B46H Steel Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: AISI 50B46H Boron-Alloyed Steel** **AISI 50B46H** is a medium-carbon, boron-alloyed, hardenable steel specifically engineered for applications requiring high surface hardness, good wear resistance, and a tough core. The key characteristic of this steel is the addition of a small but effective amount of boron (typically 0.0005%-0.003%), which significantly enhances its hardenability without the need for expensive alloying elements like chromium, nickel, or molybdenum in large quantities. This makes 50B46H a cost-effective alternative to more traditional alloy steels for many components. It is commonly supplied in the annealed or cold-drawn condition and is designed to be heat-treated (quenched and tempered) by the end-user to achieve its optimal mechanical properties. The “H” suffix in its designation explicitly indicates that its chemical composition is controlled within specific limits to guarantee a predictable hardenability band, as defined by standards like SAE J1868. --- ### **1. Chemical Composition** The chemical composition is the foundation of 50B46H's properties. The boron addition dramatically increases the depth to which the steel can be hardened during quenching. | Element | Composition Range (%) | Purpose & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.44 - 0.49 | Primary hardening element. Provides high strength and wear resistance after heat treatment. | | **Manganese (Mn)** | 0.75 - 1.00 | Increases hardenability, strength, and hardness. Aids in deoxidation during steelmaking. | | **Phosphorus (P)** | ≤ 0.035 (max) | Impurity. Kept low to prevent cold brittleness. | | **Sulfur (S)** | 0.040 - 0.070 | Intentionally added to improve machinability (forms manganese sulfide inclusions). | | **Boron (B)** | 0.0005 - 0.003 | **Key element.** Greatly boosts hardenability by retarding the formation of soft transformation products during quenching. | | **Iron (Fe)** | Balance | Base metal. | *Note: Silicon (Si) content is typically present in small amounts (e.g., 0.15-0.35%) but is not always a specified controlled element in the standard.* --- ### **2. Physical & Mechanical Properties** Properties are highly dependent on the heat treatment condition. **A. In the Annealed Condition (Typical for supplied material):** * **Hardness:** ~ 183 BHN (Brinell) * **Tensile Strength:** ~ 620 MPa (90 ksi) * **Yield Strength:** ~ 415 MPa (60 ksi) * **Elongation:** ~ 25% * **Machinability:** Good (enhanced by sulfur content). **B. After Quenching and Tempering (Example):** * **Process:** Austenitize (~850°C / 1560°F), quench in oil, and temper at a chosen temperature (e.g., 400-600°C / 750-1110°F). * **Resulting Hardness Range:** 35 - 55 HRC (depending on tempering temperature and section size). * **Core Properties:** Combines a very hard, wear-resistant surface with a tough, ductile core capable of absorbing impact and fatigue stresses. --- ### **3. Product Applications** AISI 50B46H is ideal for manufacturing high-strength, wear-resistant components that are typically heat treated after forming or machining. * **Automotive:** Axle shafts, steering components (pins, arms), universal joint crosses, clutch forks, high-strength bolts and fasteners. * **Agricultural Machinery:** Gears, shafts, plough components, tillage tool pins. * **General Engineering:** High-strength bolts, studs, pins, and other critical fasteners; hydraulic piston rods, lever arms, and spindles. * **Forgings:** Commonly used for drop-forged and hot-forged parts that require subsequent heat treatment. --- ### **4. International Standards & Equivalent Grades** AISI 50B46H is primarily recognized under the SAE/AISI system. Equivalent or closely related grades in other international standards include: | Standard | Grade Designation | Note | | :--- | :--- | :--- | | **SAE / AISI (USA)** | **50B46H** | The primary standard. Governed by SAE J404, J412, and **J1868** for H-band hardenability. | | **UNS** | G50461 | Unified Numbering System code. | | **DIN (Germany)** | **50B46** | Similar specification, often without the explicit "H" band certification. | | **EN (Europe)** | **1.5532** | Numerical designation for boron-alloyed steels. | | **JIS (Japan)** | **SB46** | Japanese equivalent for boron steel. | | **GB (China)** | **40B** / **40MnB** | Chinese equivalents; composition is similar but not identical. | **Key Standard Reference:** **SAE J1868** is critical, as it defines the methodology for determining and reporting the hardenability band (the maximum and minimum hardness values at specified distances from the quenched end in a Jominy test). This allows engineers to predict the hardness profile across a part's cross-section. --- ### **Summary** AISI 50B46H is a **cost-effective, high-hardenability steel** that leverages boron as a potent hardenability enhancer. It delivers performance comparable to more expensive alloy steels in applications demanding a combination of surface hardness and core toughness. Its predictable response to heat treatment, guaranteed by its “H”-band certification, makes it a reliable and efficient material choice for critical, high-stress components in the automotive, agricultural, and general engineering industries. -:- For detailed product information, please contact sales. -: AISI 50B46H Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4100 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 50B46H Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 50B46H Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 50B46H Steel Flange -:- For detailed product information, please contact sales. -:

Packing of AISI 50B46H 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 571 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