AISI 5046 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 5046 Steel Flange Product Information -:- For detailed product information, please contact sales. -: AISI 5046 Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

AISI 5046 Steel Product Information -:- For detailed product information, please contact sales. -: **Product Datasheet: AISI 5046 Medium-Carbon Chromium Alloy Steel** --- ### **1. Product Overview** AISI 5046 is a **medium-carbon, chromium alloy steel** belonging to the 50xx series, distinguished by its moderate chromium content. It is designed for applications requiring **good strength, toughness, and wear resistance** after heat treatment (quenching and tempering). The addition of chromium provides enhanced hardenability and improved response to thermal treatment compared to plain carbon steels, making it suitable for larger cross-sections and more demanding mechanical applications. It is typically supplied in the hot-rolled, annealed, or normalized condition for subsequent machining and heat treatment. --- ### **2. Key International & Equivalent Standards** | Region/System | Standard Designation | Description | | :--- | :--- | :--- | | **USA (Primary)** | **SAE J404, J412, J770** | Standard designation: **AISI 5046** | | **USA (Material)** | **ASTM A29/A29M** | Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought | | **Europe (Similar)** | **1.7006** | Material number for a roughly similar grade (e.g., 46Cr2 or similar variant). Exact equivalent is not standardized. | | **Germany (Similar)** | **46Cr2 (DIN 17212)** | Similar composition and application scope. | | **Japan (Approx.)** | **SCr445 (JIS G4105)** | Similar chromium steel for machine structural use. | | **ISO (Approx.)** | **Type 46Cr2** per **ISO 683-11** | Heat-treatable steels, part 11. | --- ### **3. Chemical Composition (Weight %)** *Composition per SAE J404 standard specification.* | Element | Minimum | Maximum | Typical | Primary Function | | :--- | :--- | :--- | :--- | :--- | | **Carbon (C)** | 0.44 | 0.49 | 0.46 | Primary contributor to hardness and strength via martensite formation. | | **Manganese (Mn)** | 0.70 | 0.90 | 0.80 | Increases hardenability, combats sulfur embrittlement. | | **Phosphorus (P)** | — | 0.035 | 0.020 | Residual impurity (controlled). | | **Sulfur (S)** | — | 0.040 | 0.025 | Improves machinability (forms MnS inclusions). | | **Silicon (Si)** | 0.15 | 0.35 | 0.25 | Deoxidizer, provides solid solution strengthening. | | **Chromium (Cr)** | 0.20 | 0.35 | 0.27 | Enhances hardenability, improves wear and corrosion resistance slightly. | | **Nickel (Ni)** | — | 0.35 (Residual) | — | Residual element. | | **Molybdenum (Mo)** | — | 0.10 (Residual) | — | Residual element. | --- ### **4. Mechanical Properties (Heat-Treated Condition)** *Properties are highly dependent on section size and specific tempering temperature. Data represents typical values for a medium-sized section (~25-50mm diameter) after oil quenching and tempering.* | Condition / Tempering Temp. | Tensile Strength | Yield Strength (0.2%) | Elongation (%) | Reduction of Area (%) | Typical Hardness | | :--- | :--- | :--- | :--- | :--- | :--- | | **Annealed (for machining)** | 620 - 750 MPa | ~ 415 MPa | ~ 20 | — | 187 - 229 HB | | **Q&T @ 425°C (800°F)** | 1150 - 1300 MPa | 1000 - 1150 MPa | 12 - 15 | 45 - 50 | 35 - 40 HRC | | **Q&T @ 540°C (1000°F)** | 950 - 1100 MPa | 800 - 950 MPa | 15 - 18 | 50 - 55 | 28 - 33 HRC | | **Q&T @ 650°C (1200°F)** | 750 - 850 MPa | 600 - 700 MPa | 18 - 22 | 55 - 60 | 22 - 26 HRC | #### **Physical Properties** - **Density:** 7.85 g/cm³ - **Modulus of Elasticity (Young's):** 205 GPa - **Poisson's Ratio:** 0.29 - **Thermal Conductivity:** ~ 46 W/m·K (at 100°C) - **Machinability (Annealed):** Good (approx. 65% of 1212 free-machining steel standard). --- ### **5. Heat Treatment Guidelines** | Process | Parameters | Key Notes | | :--- | :--- | :--- | | **Annealing** | Heat to 830°C - 860°C (1525°F - 1580°F), slow furnace cool. | Produces a ferrite-pearlite structure ideal for machining. | | **Normalizing** | Heat to 870°C - 900°C (1600°F - 1650°F), air cool. | Refines grain size after forging or hot-working. | | **Hardening** | Austenitize at **830°C - 860°C (1525°F - 1580°F)**, followed by **oil quench**. | Adequate hardenability for sections up to ~30-40mm in oil. Water quenching may be used for very large sections with caution for cracking. | | **Tempering** | Temper **immediately** after quenching. 400°C - 650°C (750°F - 1200°F) for 1-2 hours per inch of thickness. | Mandatory to relieve stresses and achieve desired ductility/toughness. | --- ### **6. Primary Applications** AISI 5046 is utilized in a wide range of industrial components that require a reliable combination of strength, toughness, and moderate wear resistance: - **Automotive:** Gears, shafts (intermediate, cam), axles, steering components, sprockets, and crankshafts for moderate-duty engines. - **General Machinery:** Drive spindles, bolts, studs, couplings, pins, rollers, and general-purpose high-strength machine parts. - **Agricultural Equipment:** Gears, drive train components, plough shafts, and linkage parts. - **Forgings:** Commonly used for drop-forged and hand-forged components that will be heat-treated. - **Fasteners:** High-strength bolts, nuts, and special fasteners (after proper heat treatment). --- ### **7. Key Advantages & Selection Rationale** - **Balanced Performance:** Offers a good compromise between strength, hardenability, and cost. More capable than 10xx series carbon steels, more economical than higher-alloy steels like 41xx series. - **Good Hardenability:** The chromium content allows for through-hardening of moderately sized sections using an oil quench, reducing the risk of distortion and cracking associated with water quenching. - **Wear Resistance:** The combination of medium carbon and chromium provides better wear resistance than plain carbon steels of equivalent hardness. - **Versatility:** Responds well to standard heat treatment processes and is suitable for a broad range of common engineering applications. --- ### **Important Processing Notes** - **Weldability:** Fair to poor, similar to other medium-carbon alloy steels. Requires preheating (150-260°C / 300-500°F) and post-weld stress relieving or tempering to avoid hydrogen-induced cold cracking in the heat-affected zone (HAZ). - **Decarburization:** Susceptible to surface decarburization during prolonged high-temperature exposure (forging, annealing). Allowance for machining or controlled atmosphere heating is recommended. - **Notch Sensitivity:** In higher hardness conditions (>40 HRC), components become more sensitive to stress concentrators (sharp notches, tool marks). Proper design with generous fillets and good surface finish is important for dynamic loads. --- **Disclaimer:** The information provided is based on typical industry data and standard specifications. For specific applications, material should be ordered to the appropriate SAE/ASTM standard with agreed-upon chemical and property limits. Final mechanical properties are dependent on the component's geometry, exact heat treatment cycle, and prior processing history. Engineering validation under actual or simulated service conditions is strongly recommended. -:- For detailed product information, please contact sales. -: AISI 5046 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4097 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 5046 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 5046 Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 5046 Steel Flange -:- For detailed product information, please contact sales. -:

Packing of AISI 5046 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 568 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