ASTM A514 Steel Flange, grade G

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 A514 Steel Flange, grade G, plate thickness ≤ 19 mm Product Information -:- For detailed product information, please contact sales. -: ASTM A514 Steel Flange, grade G, plate thickness ≤ 19 mm Synonyms -:- For detailed product information, please contact sales. -:

ASTM A514 Steel, grade G, plate thickness ≤ 19 mm Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: ASTM A514 Steel, Grade G (Plate Thickness ≤ 19 mm)** --- #### **1. Product Overview** ASTM A514 Grade G is a **high-strength quenched and tempered alloy steel plate** designed for applications requiring exceptional toughness and weldability in thinner sections. With plate thickness limited to 19 mm (0.75 inches), Grade G offers an optimal combination of high strength, superior impact resistance, and excellent fabrication characteristics, making it suitable for critical structural components in demanding environments such as construction, mining, and heavy machinery. --- #### **2. International Standards & Equivalents** | Standard Organization | Designation | |-----------------------|-------------| | **ASTM International** | **A514 Grade G (t ≤ 19 mm)** | | **UNS Number** | **K11581** | | **ISO International Standard** | **ISO 4950** | | **European Norm (EN)** | **EN 10025-6 S690Q** | | **Japanese (JIS)** | **SHY685** | | **Chinese GB** | **GB/T 16270 Q690** | --- #### **3. Chemical Composition (Weight %)** | Element | Composition (%) | |---------|-----------------| | **Carbon (C)** | 0.15 - 0.21 | | **Manganese (Mn)** | 0.95 - 1.30 | | **Phosphorus (P)** | 0.035 max | | **Sulfur (S)** | 0.035 max | | **Silicon (Si)** | 0.15 - 0.35 | | **Nickel (Ni)** | 0.30 - 0.50 | | **Chromium (Cr)** | 0.40 - 0.65 | | **Molybdenum (Mo)** | 0.20 - 0.30 | | **Vanadium (V)** | 0.03 - 0.08 | | **Boron (B)** | 0.001 - 0.005 | | **Copper (Cu)** | 0.20 - 0.60 | | **Iron (Fe)** | Balance | **Key Composition Features:** - **Optimized Carbon Content**: 0.15-0.21% for balanced strength and weldability - **Enhanced Manganese**: 0.95-1.30% for improved hardenability - **Copper Addition**: 0.20-0.60% for atmospheric corrosion resistance - **Boron Treatment**: Essential for achieving high strength properties --- #### **4. Mechanical Properties (Thickness ≤ 19 mm)** **Tensile Properties:** - **Tensile Strength**: 760 - 895 MPa (110 - 130 ksi) - **Yield Strength**: 690 MPa (100 ksi) min - **Elongation in 50 mm (2 in)**: 18% min - **Reduction of Area**: 40% min **Impact Properties:** - **Charpy V-Notch Impact**: 54 J (40 ft-lb) min at -18°C (0°F) - **Fracture Toughness**: Good crack initiation and propagation resistance - **Fatigue Performance**: Excellent for dynamic loading applications **Hardness Properties:** - **Brinell Hardness**: 235 - 293 HB - **Typical Hardness**: 260 HB --- #### **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** | 43.0 W/m·K at 20°C | | **Coefficient of Thermal Expansion** | 11.5 × 10⁻⁶ /K (20-100°C) | | **Specific Heat Capacity** | 470 J/kg·K | --- #### **6. Product Applications** **Construction and Mining Equipment:** - **Crane Boom Sections**: High-strength structural members - **Excavator Components**: Boom arms, stick sections, and attachment points - **Mining Equipment**: Shovel components and structural supports - **Construction Machinery**: High-stress frames and components **Transportation and Infrastructure:** - **Bridge Components**: Critical tension members and connection plates - **Off-highway Vehicles**: Chassis frames and structural components - **Heavy Transport Equipment**: Trailer beams and support structures - **Infrastructure Projects**: Critical structural elements **Industrial Applications:** - **Pressure Vessels**: High-pressure applications - **Industrial Machinery**: High-stress machine frames and components - **Material Handling Systems**: Heavy-duty conveyor supports - **Energy Sector Equipment**: Structural components in power generation --- #### **7. Manufacturing & Fabrication** **Heat Treatment Process:** - **Austenitizing**: 870-925°C (1600-1700°F) - **Quenching**: Controlled cooling for martensitic transformation - **Tempering**: 540-665°C (1000-1230°F) for optimal properties - **Final Microstructure**: Tempered martensite **Welding Performance:** - **Pre-heat Requirement**: 150-200°C (300-400°F) minimum - **Interpass Control**: Maximum 230°C (450°F) - **Post-Weld Heat Treatment**: Recommended at 595-650°C (1100-1200°F) - **Filler Metal Selection**: AWS E11018-M or equivalent high-strength electrodes - **Welding Processes**: SMAW, GMAW, FCAW with proper procedure control **Fabrication Characteristics:** - **Thermal Cutting**: Good results with plasma and laser cutting - **Cold Forming**: Adequate formability with proper techniques - **Machining**: Good machinability with appropriate tooling - **Surface Preparation**: Good for coating applications --- #### **8. Quality Assurance & Testing** **Standard Testing Protocol:** - Chemical analysis per heat - Tension tests from different locations - Charpy V-notch impact tests at specified temperature - Hardness testing - Ultrasonic examination **Quality Verification:** - Visual and dimensional inspection - Surface quality assessment - Hydrogen content analysis (when required) - Microstructural examination --- #### **9. Corrosion Performance** - **Atmospheric Corrosion**: Enhanced resistance due to copper content - **Coating Compatibility**: Good with proper surface preparation - **Protection Systems**: Compatible with standard coating systems - **Maintenance**: Regular inspection and coating maintenance recommended --- #### **10. Available Product Forms** **Plate Specifications:** - **Thickness Range**: Up to 19 mm (0.75 inches) for Grade G - **Width Range**: Up to 3600 mm (142 inches) - **Length Range**: Up to 18000 mm (710 inches) - **Surface Conditions**: Mill finish, blast cleaned, or pre-primed --- #### **11. Technical Specifications** **Dimensional Tolerances:** - **Thickness Tolerance**: ±0.25 mm to ±0.7 mm - **Width Tolerance**: +20 mm, -0 mm - **Length Tolerance**: +40 mm, -0 mm - **Flatness**: 12 mm/m maximum **Engineering Properties:** - **Fatigue Strength**: Good for dynamic loading applications - **Fracture Toughness**: Adequate crack resistance - **Weldability**: Good with proper procedures - **Structural Efficiency**: High strength-to-weight ratio --- **Technical Notes:** - Grade G provides minimum 690 MPa yield strength with good toughness - Suitable for highly stressed structural applications - Requires proper welding procedures and qualified personnel - Must comply with AWS D1.1 and relevant structural codes - Professional engineering design recommended for all applications *This information is for reference purposes. For complete technical requirements, consult the latest ASTM A514 standard and applicable structural design codes. Always verify material properties with certified mill test reports and employ qualified engineering professionals for design and fabrication.* -:- For detailed product information, please contact sales. -: ASTM A514 Steel, grade G, plate thickness ≤ 19 mm Specification Dimensions Size： Diameter 20-1000 mm Length <4277 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 A514 Steel, grade G, plate thickness ≤ 19 mm Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A514 Steel Flange, grade G, plate thickness ≤ 19 mm -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A514 Steel Flange, grade G, plate thickness ≤ 19 mm -:- For detailed product information, please contact sales. -:

Packing of ASTM A514 Steel Flange, grade G, plate thickness ≤ 19 mm -:- 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 748 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