ASTM A284 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 A284 Steel Flange, grade D Product Information -:- For detailed product information, please contact sales. -: ASTM A284 Steel Flange, grade D Synonyms -:- For detailed product information, please contact sales. -:

ASTM A284 Steel, grade D Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A284 / A284M Steel, Grade D** --- #### **1. Product Overview** ASTM A284 Grade D is a **low-carbon steel** specifically formulated for applications requiring **enhanced magnetic properties** and good formability. As the highest quality grade in the A284 standard, it features controlled chemistry to optimize magnetic performance while maintaining adequate mechanical properties for general structural applications. This grade is particularly suitable for electromagnetic devices, motor components, and other applications where superior magnetic characteristics are essential. --- #### **2. International Standards & Equivalents** | Standard Organization | Designation | |-----------------------|-------------| | **ASTM International** | **A284 / A284M Grade D** | | **UNS Number** | **K02601** | | **ISO International Standard** | **ISO 630-2** | | **European Norm (EN)** | **DC03** (Similar) | | **Japanese (JIS)** | **SPHC** | | **Chinese GB** | **Q215** | | **German (DIN)** | **RRSt 14** | --- #### **3. Chemical Composition (Weight %)** | Element | Composition (%) | |---------|-----------------| | **Carbon (C)** | 0.20 max | | **Manganese (Mn)** | 0.60 max | | **Phosphorus (P)** | 0.030 max | | **Sulfur (S)** | 0.030 max | | **Silicon (Si)** | 0.15 max | | **Copper (Cu)** | 0.20 min (when required) | | **Iron (Fe)** | Balance | **Key Composition Features:** - **Controlled Carbon**: Maximum 0.20% for optimal magnetic response - **Restricted Manganese**: Maximum 0.60% to enhance magnetic permeability - **Low Silicon Content**: Maximum 0.15% for improved magnetic characteristics - **Tighter Impurity Control**: Lower phosphorus and sulfur limits than lower grades --- #### **4. Mechanical Properties** **Tensile Properties:** - **Tensile Strength**: 345-450 MPa (50,000-65,000 psi) - **Yield Strength**: 185 MPa (27,000 psi) min - **Elongation in 200 mm (8 in)**: 25% min - **Elongation in 50 mm (2 in)**: 28% min **Magnetic Properties:** - **High Magnetic Permeability**: Superior to lower grades - **Low Hysteresis Loss**: Excellent for AC applications - **Good Saturation Induction**: Suitable for high-flux applications - **Consistent Magnetic Response**: Uniform properties throughout material --- #### **5. Physical Properties** | Property | Value | |----------|-------| | **Density** | 7.85 g/cm³ (0.284 lb/in³) | | **Modulus of Elasticity** | 200 GPa (29,000 ksi) | | **Shear Modulus** | 77 GPa (11,200 ksi) | | **Poisson's Ratio** | 0.29 | | **Thermal Conductivity** | 53.0 W/m·K at 20°C | | **Coefficient of Thermal Expansion** | 11.7 × 10⁻⁶ /K (20-100°C) | | **Specific Heat Capacity** | 475 J/kg·K | | **Electrical Resistivity** | 0.16 μΩ·m | | **Curie Temperature** | ~770°C (~1418°F) | --- #### **6. Product Applications** **Electromagnetic Components:** - High-efficiency transformer cores - Electric motor laminations and rotors - Generator magnetic circuits - High-performance solenoid cores - Precision relay components **Electrical Equipment:** - Magnetic shielding applications - Instrument and meter components - Power supply magnetics - Audio transformer cores - Electrical control devices **General Manufacturing:** - Precision machine parts - Electrical enclosure components - Scientific instrument parts - Laboratory equipment frames - Quality consumer products --- #### **7. Manufacturing & Fabrication** **Forming Characteristics:** - **Excellent Deep Drawing Quality**: Suitable for complex forming - **Superior Bendability**: Minimum bend radius 0.3 × thickness - **Fine Blanking Capability**: Excellent for precision stamping - **Surface Quality**: Superior finish for critical applications **Heat Treatment:** - **Annealing Recommended**: For optimal magnetic properties - **Annealing Temperature**: 730-850°C (1350-1560°F) - **Atmosphere Control**: Recommended to prevent oxidation - **Cooling Rate**: Controlled cooling for best magnetic performance **Welding Performance:** - **Good Weldability**: With proper procedures - **Recommended Processes**: GTAW, Resistance Welding, Laser Welding - **Precautions**: Minimize heat input to preserve magnetic properties - **Post-weld Annealing**: May be required for critical magnetic applications --- #### **8. Quality Assurance & Testing** **Standard Tests:** - Complete chemical analysis - Tension testing - Bend testing - Magnetic properties verification **Enhanced Testing:** - Epstein frame magnetic testing - Core loss measurement - Permeability testing - Surface quality inspection - Dimensional precision verification --- #### **9. Corrosion Performance** - **Atmospheric Exposure**: Moderate corrosion resistance - **Indoor Applications**: Excellent performance in controlled environments - **Protection Methods**: Painting, phosphating, or specialty coatings - **Storage Recommendations**: Dry conditions to prevent surface degradation --- #### **10. Available Product Forms** **Standard Dimensions:** - **Thickness Range**: 0.5 mm to 100 mm (0.020" to 4") - **Width Range**: 600 mm to 2000 mm (24" to 80") - **Length Range**: 2000 mm to 8000 mm (80" to 320") **Special Conditions:** - Annealed for magnetic applications - Cold-rolled with controlled texture - Surface-treated for specific applications - Custom sizes for specialized uses --- #### **11. Technical Specifications** **Dimensional Tolerances:** - **Thickness Tolerance**: ±0.20 mm to ±1.0 mm - **Width Tolerance**: +15 mm, -0 mm (+0.6", -0") - **Length Tolerance**: +30 mm, -0 mm (+1.2", -0") - **Flatness**: 10 mm/m maximum **Magnetic Performance:** - **Relative Permeability**: Typically 1500-4000 (dependent on processing) - **Core Loss**: Lower than conventional structural steels - **Coercive Force**: Typically 80-160 A/m --- **Technical Notes:** - Specifically engineered for optimal magnetic performance - Requires proper annealing for maximum magnetic properties - Suitable for both DC and low-frequency AC applications - Surface cleanliness critical for magnetic applications - Storage and handling should prevent surface contamination *This information is for reference purposes. For complete technical requirements and magnetic performance specifications, consult the latest ASTM A284/A284M standard and applicable electrical standards. Material should be tested for specific magnetic applications to ensure performance requirements are met.* -:- For detailed product information, please contact sales. -: ASTM A284 Steel, grade D Specification Dimensions Size： Diameter 20-1000 mm Length <4242 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 A284 Steel, grade D Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A284 Steel Flange, grade D -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A284 Steel Flange, grade D -:- For detailed product information, please contact sales. -:

Packing of ASTM A284 Steel Flange, grade D -:- 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 713 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