ASTM A633 HSLA Steel Flange Grade D

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 A633 HSLA Steel Flange Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Product Information -:- For detailed product information, please contact sales. -: ASTM A633 HSLA Steel Flange Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Synonyms -:- For detailed product information, please contact sales. -:

ASTM A633 HSLA Steel Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A633 Grade D HSLA Steel (Thickness 65-100 mm)** **ASTM A633 Grade D** represents the premium high-strength grade within the ASTM A633 specification, specifically engineered for heavy-section applications requiring exceptional strength and toughness. For the **65-100 mm (2.5-4 inch)** thickness range, this normalized high-strength low-alloy steel provides an outstanding combination of mechanical properties that make it suitable for the most demanding structural applications in extreme service conditions, including arctic environments and critical infrastructure projects. --- #### **1. Key International Standards** * **Primary Standard:** **ASTM A633/A633M** - Standard Specification for Normalized High-Strength Low-Alloy Structural Steel Plates * **Related International Standards:** * **EN 10025-4:** S420N (Similar strength level, normalized condition) * **ISO 4950:** GR 4 Type 3 (High yield strength structural steels) * **JIS G3126:** S420NL (Low temperature service application) * **GB/T 1591:** Q420D (Chinese equivalent for low temperature service) * **CSA G40.21:** 420W (Canadian structural steel equivalent) --- #### **2. Chemical Composition (Heat Analysis, %)** | Element | Composition Range | Notes | |---------|-------------------|-------| | **Carbon (C)** | 0.22 max | Optimized for strength maintenance in heavy sections | | **Manganese (Mn)** | 1.30-1.60 | Enhanced for through-thickness hardenability | | **Phosphorus (P)** | 0.04 max | Strict control for improved Z-direction properties | | **Sulfur (S)** | 0.05 max | Low levels essential for heavy plate integrity | | **Silicon (Si)** | 0.15-0.50 | Deoxidizer and solid solution strengthener | | **Copper (Cu)** | 0.20 min | Atmospheric corrosion resistance | | **Columbium (Cb)** | 0.005-0.05 | Grain refinement in heavy sections | | **Vanadium (V)** | 0.01-0.10 | Precipitation strengthening | *Note: Chemistry is carefully balanced to maintain high strength and toughness through the entire thickness of heavy plates, with particular attention to microalloying elements' distribution.* --- #### **3. Mechanical Properties (Thickness 65-100 mm)** **Tensile Properties:** | Property | Requirement | Typical Value | |----------|--------------|---------------| | **Yield Strength** | 55 ksi min (380 MPa) | 58-68 ksi (400-470 MPa) | | **Tensile Strength** | 75 ksi min (515 MPa) | 78-88 ksi (540-605 MPa) | | **Elongation** | 18% min in 2" | 19-23% | | **Reduction of Area** | 40% min | 42-50% | **Impact Toughness (Charpy V-Notch):** | Test Temperature | Minimum Requirement | Typical Value | |------------------|---------------------|---------------| | **-75°F (-60°C)** | 15 ft-lb (20 J) min | 20-35 ft-lb | | **-100°F (-75°C)** | - | 15-25 ft-lb | --- #### **4. Physical Properties** * **Density:** 0.284 lb/in³ (7,850 kg/m³) * **Modulus of Elasticity:** 29,000 ksi (200 GPa) * **Poisson's Ratio:** 0.29 * **Thermal Expansion:** 6.4×10⁻⁶/°F (11.5×10⁻⁶/°C) * **Thermal Conductivity:** 40.2 W/m·K at 212°F (100°C) * **Specific Heat:** 450 J/kg·K * **Transformations:** Ac1 ~ 1330°F (721°C), Ac3 ~ 1475°F (802°C) --- #### **5. Product Applications** **Heavy Structural Applications:** * Offshore platform critical nodes and leg sections * Arctic bridge girders and support structures * Power plant main structural frameworks * Heavy mining equipment structural components * Shipbuilding keel plates and critical hull members **Specialized Heavy-Section Uses:** * Pressure vessel shells for low-temperature service * Hydraulic turbine components and large bearings * Large diameter penstocks and water gates * Construction machinery main frames and undercarriages * Crane main boom sections and heavy lift equipment --- #### **6. Key Advantages for Heavy Sections** * **Superior Through-Thickness Properties:** Normalizing ensures consistent properties across entire heavy section * **Minimal Strength Degradation:** Maintains high strength levels in thick plates * **Excellent Z-Direction Properties:** Enhanced resistance to lamellar tearing in heavy fabrications * **Exceptional Low-Temperature Performance:** Maintains toughness down to -100°F (-75°C) * **Cost-Effective High Strength:** Provides quenched and tempered steel performance at lower cost --- #### **7. Fabrication Considerations for Heavy Plates** **Welding Requirements:** * Preheating: 300-400°F (150-200°C) depending on exact thickness and restraint * Interpass temperature: 400-500°F (200-260°C) maximum * Low hydrogen processes essential (FCAW, SAW, GMAW) * PWHT recommended for highly restrained joints at 1100-1150°F (595-620°C) **Normalizing Cycle for Heavy Plates:** * Temperature: 1650-1700°F (900-925°C) * Extended soaking time: 30-60 minutes per inch of thickness * Controlled cooling in still air to ensure uniform microstructure **Machining & Forming:** * Good machinability with proper tool geometry and cooling * Hot forming recommended above 1550°F (845°C) * Cold forming requires adequate radius and proper equipment --- **Technical Note:** For thicknesses 65-100 mm, the extended normalizing cycle is crucial for achieving the specified mechanical properties through the entire cross-section. The chemistry is optimized to maintain the high strength characteristic of Grade D while ensuring adequate toughness in heavy sections. **Disclaimer:** This technical overview provides general information. For specific applications of ASTM A633 Grade D in heavy sections, always consult the latest ASTM standard and manufacturer's certification data. Special considerations for welding and fabrication of these high-strength heavy plates should be addressed through qualified welding procedures and experienced engineering oversight. -:- For detailed product information, please contact sales. -: ASTM A633 HSLA Steel Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Specification Dimensions Size： Diameter 20-1000 mm Length <4503 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 A633 HSLA Steel Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A633 HSLA Steel Flange Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A633 HSLA Steel Flange Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) -:- For detailed product information, please contact sales. -:

Packing of ASTM A633 HSLA Steel Flange Grade D, Thickness 65 to 100 mm (2.5 to 4 in.) -:- 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 974 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