ASTM A517 Low Alloy Steel Flange, Grade P

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 A517 Low Alloy Steel Flange, Grade P Product Information -:- For detailed product information, please contact sales. -: ASTM A517 Low Alloy Steel Flange, Grade P Synonyms -:- For detailed product information, please contact sales. -:

ASTM A517 Low Alloy Steel, Grade P Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A517 Grade P: High-Strength Quenched and Tempered Alloy Steel** #### **1. Overview** ASTM A517 is a standard specification for high-strength, quenched and tempered alloy steel plates primarily used in pressure vessels and other critical applications. **Grade P** is a specialized grade within this family, formulated to provide exceptional strength and toughness properties in **thicker sections**. This grade achieves its superior mechanical properties through a carefully balanced chemical composition and rigorous heat treatment process (quenching and tempering), making it particularly suitable for heavy-walled pressure vessels and structural components where through-thickness properties are critical. #### **2. Chemical Composition** The chemical composition of ASTM A517 Grade P is optimized for deep hardenability to maintain consistent properties in thick sections. The following table outlines the required percentages (by heat analysis): | Element | Composition (%) | | :--- | :--- | | Carbon (C) | 0.20 - 0.30 | | Manganese (Mn) | 0.60 - 1.00 | | Phosphorus (P) | 0.035 max | | Sulfur (S) | 0.035 max | | Silicon (Si) | 0.15 - 0.35 | | Nickel (Ni) | 0.70 - 1.00 | | Chromium (Cr) | 0.40 - 0.65 | | Molybdenum (Mo) | 0.40 - 0.60 | | Boron (B) | 0.0015 - 0.0050 | | Vanadium (V) | 0.02 - 0.10 | **Key Alloying Roles:** * **Carbon & Manganese:** Provide fundamental strength and hardenability * **Nickel:** Enhances toughness and hardenability, particularly important in thick sections * **Chromium & Molybdenum:** Work synergistically to increase hardenability depth and tempering resistance * **Boron:** A powerful hardenability intensifier crucial for maintaining strength in heavy thicknesses * **Vanadium:** Contributes to grain refinement and secondary hardening #### **3. Physical & Mechanical Properties** ASTM A517 Grade P is supplied in the quenched and tempered condition. The mechanical properties are maintained through thicker sections compared to many other grades: | Property | Requirement (up to 4 inches / 100 mm) | | :--- | :--- | | **Tensile Strength** | 115 - 135 ksi (790 - 930 MPa) | | **Yield Strength (min)** | 100 ksi (690 MPa) | | **Elongation in 2-in (50 mm) (min)** | 16% | | **Reduction of Area (min)** | 45% | | **Hardness (Brinell)** | Typically 235 - 293 HBW | **Impact Toughness:** * **Charpy V-Notch (CVN) Impact Test:** Required at **-50°F (-46°C)** * **Minimum Average Value:** 15 ft-lb (20 J) for longitudinal specimens **Physical Properties (Typical Values):** * **Density:** 0.284 lb/in³ (7850 kg/m³) * **Modulus of Elasticity:** 29,000 ksi (200 GPa) * **Poisson's Ratio:** 0.29 * **Coefficient of Thermal Expansion:** ~6.5 × 10⁻⁶/°F (11.7 × 10⁻⁶/°C) #### **4. Product Applications** Grade P's ability to maintain high strength and toughness in thick sections makes it particularly valuable for demanding applications: * **Heavy-Walled Pressure Vessels:** Reactors, separators, and storage vessels in petrochemical and chemical processing industries * **Hydraulic Press Frames:** Components requiring high strength in thick cross-sections * **Mining Equipment:** Shovel bases, support structures, and other heavy components * **Power Generation Equipment:** Turbine components and pressure-containing parts * **Structural Applications:** Heavy construction and bridge components where thick plates are required #### **5. International Standards & Equivalents** ASTM A517 Grade P has functional equivalents in other international standards, though direct substitution requires careful evaluation: | Standard | Equivalent Grade | Notes | | :--- | :--- | :--- | | **ASTM A517** | **Grade P** | Base specification | | **EN 10028-6** | **S690Q** | European equivalent with similar strength characteristics | | **ISO 4950-3** | **EQ 70** | International standard for high-yield strength steels | **Important Fabrication Considerations:** * **Welding:** Requires strict control including pre-heating and low-hydrogen processes * **Post-Weld Heat Treatment:** Typically required for stress relief * **Section Sensitivity:** Properties may vary through thickness - appropriate testing is essential * **Quality Assurance:** Extensive testing often required for thick-section applications --- **Disclaimer:** This information is for reference purposes only. For critical applications, consult the latest ASTM A517 standard and qualified materials engineers. Actual properties may vary by manufacturer and specific heat treatment processes. -:- For detailed product information, please contact sales. -: ASTM A517 Low Alloy Steel, Grade P Specification Dimensions Size： Diameter 20-1000 mm Length <4415 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 A517 Low Alloy Steel, Grade P Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A517 Low Alloy Steel Flange, Grade P -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A517 Low Alloy Steel Flange, Grade P -:- For detailed product information, please contact sales. -:

Packing of ASTM A517 Low Alloy Steel Flange, Grade P -:- 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 886 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