ASTM A414 Grade A Pressure Vessel 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 A414 Grade A Pressure Vessel Steel Flange, Composition Spec Product Information -:- For detailed product information, please contact sales. -: ASTM A414 Grade A Pressure Vessel Steel Flange, Composition Spec Synonyms -:- For detailed product information, please contact sales. -:

ASTM A414 Grade A Pressure Vessel Steel, Composition Spec Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A414 / A414M Grade A Pressure Vessel Steel** **1. Overview** ASTM A414 / A414M Grade A is a standard specification for carbon steel plates intended for the fabrication of pressure vessels. This grade belongs to a family of steels specifically designed for applications where reliability and safety are paramount. Grade A is characterized by its good weldability, formability, and moderate strength, making it a cost-effective choice for a wide range of low to moderate-pressure containment applications. **2. Key International Standards** * **Primary Standard:** **ASTM A414 / A414M** - Standard Specification for Carbon Steel Sheets for Pressure Vessels. * This standard covers several grades (A, B, C, D, E, F, G) with Grade A being a common, general-purpose option. * **Related Standards:** * **ASTM A20/A20M:** Standard Specification for General Requirements for Steel Plates for Pressure Vessels. This provides supplementary requirements for testing, inspection, and documentation. * **Common Equivalent Standards:** * **EN 10028-2:** P235GH (This European standard is a very close equivalent in terms of composition and mechanical properties). * **JIS G3115:** SB410 (Japanese standard for steel for pressure vessels). **3. Chemical Composition (Weight %)** The chemical composition for ASTM A414 Grade A is carefully controlled to ensure good weldability and toughness. The following represents the typical ladle analysis requirements: | Element | Composition (%) | | :---------------- | :---------------------------------- | | Carbon (C), max | 0.18 | | Manganese (Mn), max | 0.60 (for thickness ≤ 3/4 in. / 19 mm) | | Phosphorus (P), max | 0.025 | | Sulfur (S), max | 0.025 | | Silicon (Si) | 0.15 - 0.40 (killed steel, by agreement) | *Note:* The manganese limit may increase to 0.90% for thicker plates, as specified in the standard. The silicon content is typically required for killed (deoxidized) steel to ensure soundness. **4. Mechanical & Physical Properties** The mechanical properties are guaranteed in the as-rolled or normalized condition, depending on the thickness and processing. **Mechanical Properties (at room temperature):** | Property | Value | | :--- | :--- | | Tensile Strength | 380 - 450 MPa (55 - 65 ksi) | | Yield Strength (min) | 205 MPa (30 ksi) | | Elongation in 2 in. (50 mm), (min) | 27% | **Approximate Physical Properties:** * **Density:** 7.85 g/cm³ (0.284 lb/in³) * **Melting Point:** ~ 1425 - 1520 °C (2600 - 2770 °F) * **Modulus of Elasticity:** 200 GPa (29 x 10⁶ psi) * **Thermal Conductivity:** ~ 51.9 W/m·K (at 100°C) * **Coefficient of Thermal Expansion:** ~ 11.5 x 10⁻⁶ /K (20-100°C) *Note: Physical properties are approximate and can vary.* **5. Product Applications** ASTM A414 Grade A is widely used in the construction of pressure vessels and components for various industries. Its primary applications include: * **Air Receivers:** Tanks for storing compressed air in industrial systems. * **Hot Water Storage Tanks:** Boilers and tanks for heating and plumbing systems. * **Low-Pressure Boilers:** Vessels for steam generation and heating. * **Oil and Gas:** Tanks for storing crude oil, fuel, and other petroleum products at low pressures. * **Chemical Industry:** Tanks and vessels for storing non-corrosive or mildly corrosive chemicals. **6. Key Characteristics & Advantages** * **Excellent Weldability:** The low carbon content minimizes the risk of cracking during welding, making fabrication straightforward. * **Good Formability:** Can be easily rolled, bent, and formed into the required shapes for vessel construction. * **Cost-Effectiveness:** Provides a reliable and economical solution for many standard pressure vessel applications. * **Adequate Strength:** Offers sufficient strength for a wide range of low to moderate-pressure services. In summary, **ASTM A414 Grade A** is a versatile and widely used carbon steel for pressure vessels. Its balanced properties of strength, weldability, and formability make it a fundamental material for fabricating safe and reliable containment equipment across numerous industrial sectors. -:- For detailed product information, please contact sales. -: ASTM A414 Grade A Pressure Vessel Steel, Composition Spec Specification Dimensions Size： Diameter 20-1000 mm Length <4380 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 A414 Grade A Pressure Vessel Steel, Composition Spec Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A414 Grade A Pressure Vessel Steel Flange, Composition Spec -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A414 Grade A Pressure Vessel Steel Flange, Composition Spec -:- For detailed product information, please contact sales. -:

Packing of ASTM A414 Grade A Pressure Vessel Steel Flange, Composition Spec -:- 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 851 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