ASTM A710 Steel Flange, grade A, class 1

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 A710 Steel Flange, grade A, class 1, 6.4 - 8.0 mm thick Product Information -:- For detailed product information, please contact sales. -: ASTM A710 Steel Flange, grade A, class 1, 6.4 - 8.0 mm thick Synonyms -:- For detailed product information, please contact sales. -:

ASTM A710 Steel, grade A, class 1, 6.4 - 8.0 mm thick Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A710 Steel, Grade A, Class 1 (6.4 - 8.0 mm thick)** **ASTM A710 Grade A, Class 1** is a high-strength low-alloy (HSLA) steel featuring copper precipitation strengthening, supplied in the **6.4 - 8.0 mm thickness range**. This advanced steel offers an exceptional combination of high strength, excellent toughness, and good weldability through a unique age-hardening heat treatment process, making it ideal for demanding structural applications. --- #### **1. International Standards & Classification** **Primary Standard:** **ASTM A710/A710M** - "Standard Specification for Age-Hardening Low-Carbon Nickel-Copper-Chromium-Molybdenum-Columbium Alloy Steel Plates" **Classification:** - **Grade A, Class 1** - As-supplied condition (age-hardened) - Other Classes: Class 2 (solution heat treated), Class 3 (solution heat treated and age hardened) **International Equivalents:** - **EN 10028-6**: SEV 265 - **JIS G3125**: SPA-H - **ISO 4952**: HSLA 450 --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A710 Grade A: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.07 | | Manganese (Mn) | 0.40-0.70 | | Phosphorus (P) | 0.025 | | Sulfur (S) | 0.025 | | Silicon (Si) | 0.40 | | Nickel (Ni) | 0.70-1.00 | | Copper (Cu) | 1.00-1.30 | | Chromium (Cr) | 0.40-0.80 | | Molybdenum (Mo) | 0.15-0.25 | | Columbium (Cb) | 0.02-0.10 | **Key Composition Features:** - **Ultra-Low Carbon**: Ensures excellent weldability and toughness - **Copper-Nickel System**: Primary precipitation strengthening mechanism - **Multiple Alloying**: Chromium, molybdenum, and columbium for enhanced properties - **High Purity**: Strict control of sulfur and phosphorus --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (6.4 - 8.0 mm thickness):** | Property | Value | |---|---| | **Tensile Strength** | 585-760 MPa (85-110 ksi) | | **Yield Strength (min.)** | 450 MPa (65 ksi) | | **Elongation in 2" (min.)** | 20% | | **Elongation in 8" (min.)** | 22% | **Impact Toughness Properties:** - **Charpy V-Notch Test Temperature**: -100°F (-73°C) - **Minimum Impact Energy**: 40 ft-lbf (54 J) - **Exceptional Toughness**: Maintains properties at cryogenic temperatures **Physical Properties:** - **Density**: 7.87 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 203 GPa (29,400 ksi) - **Poisson's Ratio**: 0.29 - **Thermal Conductivity**: 44.5 W/m·K - **Coefficient of Thermal Expansion**: 11.5 × 10⁻⁶/°C --- #### **4. Product Applications** **Pressure Vessel Industry:** - Cryogenic storage tanks - LNG containment systems - Low-temperature pressure vessels - Chemical process equipment **Marine and Offshore:** - Ship hull components - Offshore platform structures - Submarine pressure hulls - Marine construction equipment **Aerospace and Defense:** - Missile components - Aircraft structural parts - Military vehicle armor - Space vehicle structures **Energy Sector:** - Nuclear power plant components - Hydroelectric equipment - Wind turbine structural parts - Power transmission towers **Industrial Equipment:** - Heavy machinery frames - Mining equipment components - Material handling systems - Specialized structural applications --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Excellent Weldability**: Despite high strength - **Preheat Requirements**: 200-250°F (95-120°C) recommended - **Recommended Processes**: GTAW, GMAW, SMAW (low hydrogen) - **Filler Metals**: Matching strength nickel-copper alloys **Forming & Cutting:** - **Good Formability**: Suitable for cold forming operations - **Minimum Bend Radius**: 2t for 90° bends - **Cutting Methods**: Plasma, laser, and waterjet cutting preferred - **Machinability**: Fair (requires appropriate tooling) **Heat Treatment Considerations:** - **Age-Hardened Condition**: As supplied - **Weld Thermal Effects**: Minimal property degradation - **Post-Weld Heat Treatment**: Generally not required - **Thermal Stability**: Good resistance to over-aging **Quality Assurance:** - **Comprehensive Testing**: Tensile and impact tests mandatory - **Multiple Test Locations**: Through-thickness properties verified - **NDT Requirements**: Ultrasonic testing as specified - **Certification**: Full traceability and test reports --- ### **Technical Summary** ASTM A710 Grade A, Class 1 in the 6.4 - 8.0 mm thickness range represents a premium age-hardening steel that delivers an exceptional combination of high strength (65 ksi yield minimum) and outstanding low-temperature toughness. The unique copper precipitation strengthening mechanism, combined with ultra-low carbon content, provides a material that maintains excellent weldability despite its high strength level. The material's ability to retain high impact energy down to -100°F (-73°C) makes it particularly valuable for cryogenic applications, marine environments, and other demanding service conditions. The 6.4 - 8.0 mm thickness range is ideal for fabricated structures requiring both high strength and good formability. This steel's consistent performance, combined with its unique aging characteristics and excellent corrosion resistance (due to copper content), has established it as a preferred material for critical applications in pressure vessel construction, marine engineering, and defense industries where reliability under extreme conditions is paramount. -:- For detailed product information, please contact sales. -: ASTM A710 Steel, grade A, class 1, 6.4 - 8.0 mm thick Specification Dimensions Size： Diameter 20-1000 mm Length <4322 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 A710 Steel, grade A, class 1, 6.4 - 8.0 mm thick Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A710 Steel Flange, grade A, class 1, 6.4 - 8.0 mm thick -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A710 Steel Flange, grade A, class 1, 6.4 - 8.0 mm thick -:- For detailed product information, please contact sales. -:

Packing of ASTM A710 Steel Flange, grade A, class 1, 6.4 - 8.0 mm thick -:- 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 793 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