ASTM A516 Carbon Steel Flange, Grade 70

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 A516 Carbon Steel Flange, Grade 70 Product Information -:- For detailed product information, please contact sales. -: ASTM A516 Carbon Steel Flange, Grade 70 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A516 Carbon Steel, Grade 70 Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A516 / A516M Carbon Steel, Grade 70** #### **1. Overview** ASTM A516 Grade 70 is a pressure vessel quality carbon steel plate designed for moderate and lower-temperature service, offering higher strength characteristics within the A516 specification series. This grade is widely specified for welded pressure vessels where improved mechanical properties and good notch toughness are required. #### **2. Key International Standards** - **Primary Standard:** **ASTM A516 / A516M** - Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service - **Governing Standard:** **ASTM A20/A20M** - Standard Specification for General Requirements for Steel Plates for Pressure Vessels - **International Equivalents:** - **EN 10028-3:** P355NL1/P355NL2 (European equivalents for low temperature service) - **JIS G3115:** SB410 (Japanese pressure vessel steel) - **GB 713:** Q345R (Chinese pressure vessel steel equivalent) #### **3. Chemical Composition (Weight %)** | Element | Composition (%) | |---------|-----------------| | Carbon (C), max | 0.27 | | Manganese (Mn) | 0.85-1.30 | | Phosphorus (P), max | 0.025 | | Sulfur (S), max | 0.025 | | Silicon (Si) | 0.15-0.40 | | **Special Requirement** | **Killed steel, fine austenitic grain practice** | *Note: The controlled chemistry with higher manganese content provides enhanced strength while maintaining good toughness through fine grain practice.* #### **4. Mechanical & Physical Properties** **Mechanical Properties (at room temperature):** - **Tensile Strength:** 485-620 MPa (70-90 ksi) - **Yield Strength (min):** 260 MPa (38 ksi) - **Elongation in 2" (min):** 21% - **Hardness (typical):** 160-200 HB **Impact Toughness Properties:** - **Charpy V-Notch Impact (min):** 20 J @ -45°C (15 ft-lb @ -50°F) for normalized material **Physical Properties:** - **Density:** 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity:** 200 GPa (29,000 ksi) - **Thermal Conductivity:** 48.5 W/m·K (at 100°C) - **Coefficient of Thermal Expansion:** 11.5 × 10⁻⁶/K (20-100°C) #### **5. Product Applications** - **Pressure Vessels:** Boilers, reactors, storage tanks - **Petrochemical Industry:** Process vessels, distillation columns - **Power Generation:** Boiler drums, steam drums, deaerators - **Oil and Gas:** Refinery equipment, gas processing vessels - **Low Temperature Service:** Tanks for liquefied gases, cryogenic applications #### **6. Key Characteristics & Advantages** - **Enhanced Strength:** Higher mechanical properties compared to Grade 65 - **Excellent Notch Toughness:** Good impact resistance at low temperatures - **Superior Weldability:** Suitable for all conventional welding processes - **Cost-Effective:** Provides higher strength without significant cost premium - **Fine Grain Structure:** Ensures consistent properties and good toughness #### **7. Fabrication Considerations** - **Welding:** Standard welding practices applicable with proper procedures - **Forming:** Good formability for bending and shaping operations - **Heat Treatment:** Typically supplied in normalized condition for optimal properties - **Machining:** Good machinability with standard tooling #### **8. Quality Assurance** - **Testing:** Comprehensive mechanical and impact testing required - **Inspection:** Non-destructive testing available as supplementary requirement - **Certification:** Mill test certificates with full traceability - **Grain Size:** Fine austenitic grain size verification mandatory ASTM A516 Grade 70 offers pressure vessel manufacturers an optimal balance of strength, toughness, and fabricability, making it one of the most widely specified grades for general pressure vessel construction where reliable performance at moderate and lower temperatures is essential. -:- For detailed product information, please contact sales. -: ASTM A516 Carbon Steel, Grade 70 Specification Dimensions Size： Diameter 20-1000 mm Length <4406 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 A516 Carbon Steel, Grade 70 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A516 Carbon Steel Flange, Grade 70 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A516 Carbon Steel Flange, Grade 70 -:- For detailed product information, please contact sales. -:

Packing of ASTM A516 Carbon Steel Flange, Grade 70 -:- 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 877 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