ASTM A441 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. -: ASTM A441 Steel Flange, 19 mm thick Product Information -:- For detailed product information, please contact sales. -: ASTM A441 Steel Flange, 19 mm thick Synonyms -:- For detailed product information, please contact sales. -:

ASTM A441 Steel, 19 mm thick Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A441 High-Strength Low-Alloy Structural Steel (19 mm and thicker)** **1. Overview** ASTM A441 is a specification for high-strength low-alloy structural steel plates, bars, and shapes with thicknesses of 19 mm (3/4 inch) and greater. This manganese-vanadium steel provides enhanced strength and atmospheric corrosion resistance compared to carbon structural steels, making it suitable for welded, bolted, or riveted structures requiring improved mechanical properties and durability. **2. Key International Standards** * **Primary Standard:** **ASTM A441/A441M** - Standard Specification for High-Strength Low-Alloy Structural Manganese Vanadium Steel * **Governing Standard:** **ASTM A6/A6M** - Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling * **International Equivalents:** * **EN 10025:** S355J0/J2 (European structural steel equivalent) * **JIS G3106:** SM490YA (Japanese high-strength steel) * **GB/T 1591:** Q345 (Chinese high-strength low-alloy structural steel) * **CAN/CSA G40.21:** 350W (Canadian structural steel) **3. Chemical Composition (Weight %)** The chemical composition includes vanadium for grain refinement and strength enhancement: | Element | Composition (%) | | :---------------- | :---------------------------------- | | Carbon (C), max | 0.22 | | Manganese (Mn) | 0.85 - 1.25 | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.05 | | Silicon (Si) | 0.15 - 0.30 | | Vanadium (V) | 0.02 - 0.10 | | Copper (Cu), min | 0.20 (when specified for corrosion resistance) | *Note: Vanadium contributes to grain refinement and precipitation strengthening, while copper enhances atmospheric corrosion resistance.* **4. Mechanical & Physical Properties** **Mechanical Properties (for thicknesses 19-65 mm):** | Property | Value | | :--- | :--- | | Tensile Strength | 480 MPa min (70 ksi min) | | Yield Strength | 345 MPa min (50 ksi min) | | Elongation in 2 in. (50 mm), (min) | 18% | | **Hardness (typical)** | **~170-210 HB** | **Physical Properties:** * **Density:** 7.85 g/cm³ (0.284 lb/in³) * **Modulus of Elasticity:** 200 GPa (29 × 10⁶ psi) * **Thermal Conductivity:** ~47.5 W/m·K (at 100°C) * **Coefficient of Thermal Expansion:** ~11.7 × 10⁻⁶/K (20-100°C) * **Poisson's Ratio:** 0.29 **5. Product Applications** ASTM A441 steel is widely used in heavy structural applications requiring high strength and durability: * **Bridge Construction:** Main girders, trusses, and support structures * **Building Frameworks:** High-rise building frames and columns * **Heavy Equipment:** Crane booms, excavator frames, mining equipment * **Transmission Towers:** Heavy-duty electrical transmission structures * **Industrial Structures:** Plant frameworks, support structures * **Transportation Equipment:** Truck frames and trailer components **6. Key Characteristics & Advantages** * **Enhanced Strength:** Higher yield and tensile strength compared to carbon steels * **Improved Toughness:** Good impact resistance at service temperatures * **Atmospheric Corrosion Resistance:** 2-4 times better than carbon steel when copper-bearing * **Good Weldability:** Suitable for all conventional welding methods * **Vanadium Strengthening:** Precipitation strengthening provides consistent properties * **Cost-Effective:** Optimal strength-to-cost ratio for structural applications **7. Fabrication Considerations** * **Welding:** Requires proper procedures including pre-heating for thicker sections * **Forming:** Good formability with recommended bending radii * **Machining:** Good machinability in annealed condition * **Heat Treatment:** Typically used in as-rolled condition * **Surface Protection:** Requires protective coatings for maximum service life **Note:** ASTM A441 has been largely superseded by ASTM A572 Grade 50 for most applications, but remains important for existing structures and specific applications requiring its particular properties. ASTM A441 represents an important high-strength low-alloy structural steel option, providing reliable performance in demanding structural applications where enhanced strength and durability are required. -:- For detailed product information, please contact sales. -: ASTM A441 Steel, 19 mm thick Specification Dimensions Size： Diameter 20-1000 mm Length <4388 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. -: ASTM A441 Steel, 19 mm thick Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A441 Steel Flange, 19 mm thick -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A441 Steel Flange, 19 mm thick -:- For detailed product information, please contact sales. -:

Packing of ASTM A441 Steel Flange, 19 mm thick -:- 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 859 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