ASTM A299 Carbon Steel Flange, Manganese Silicon Alloy

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 A299 Carbon Steel Flange, Manganese Silicon Alloy Product Information -:- For detailed product information, please contact sales. -: ASTM A299 Carbon Steel Flange, Manganese Silicon Alloy Synonyms -:- For detailed product information, please contact sales. -:

ASTM A299 Carbon Steel, Manganese Silicon Alloy Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A299 Carbon Steel, Manganese-Silicon Alloy** **ASTM A299** is a specification for carbon-manganese-silicon steel plates primarily used in pressure vessel applications requiring higher strength than provided by carbon steels. This alloy steel offers improved mechanical properties through manganese-silicon solid solution strengthening, making it suitable for moderate temperature pressure vessel service. --- #### **1. International Standards & Classification** **Primary Standard:** **ASTM A299/A299M** - "Standard Specification for Pressure Vessel Plates, Carbon-Manganese-Silicon Steel" **Material Characteristics:** - Manganese-silicon strengthened carbon steel - Higher strength than conventional carbon steels - Suitable for moderate temperature service - Good notch toughness properties **International Equivalents:** - **EN 10028-2**: P355GH - **JIS G3115**: SPV 355 - **GB/T 713**: Q345R - **ISO 9328-2**: P355GH --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A299: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.24 | | Manganese (Mn) | 0.90-1.50 | | Phosphorus (P) | 0.035 | | Sulfur (S) | 0.040 | | Silicon (Si) | 0.15-0.40 | **Key Composition Features:** - **Enhanced Manganese**: 0.90-1.50% for solid solution strengthening - **Silicon Addition**: 0.15-0.40% for deoxidation and strength enhancement - **Controlled Carbon**: Maximum 0.24% for weldability and toughness - **Standard Impurity Control**: Typical phosphorus and sulfur limits --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (for thicknesses ≤ 50 mm):** | Property | Value | |---|---| | **Tensile Strength** | 515-655 MPa (75-95 ksi) | | **Yield Strength (min.)** | 275 MPa (40 ksi) | | **Elongation in 2" (min.)** | 19% | | **Elongation in 8" (min.)** | 22% | **Impact Toughness Properties:** - **Charpy V-Notch Testing**: Typically required at 0°F (-18°C) or as specified - **Minimum Impact Energy**: Usually 20 ft-lbf (27 J) when required - **Good Notch Toughness**: Suitable for pressure vessel applications **Physical Properties:** - **Density**: 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Thermal Conductivity**: 50.5 W/m·K - **Coefficient of Thermal Expansion**: 11.7 × 10⁻⁶/°C - **Specific Heat Capacity**: 485 J/kg·K --- #### **4. Product Applications** **Pressure Vessel Industry:** - Boiler drums and shells - Pressure vessel components - Heat exchanger shells - Storage tanks for elevated temperature service **Power Generation:** - Feedwater heaters - Steam drums - Economizer sections - Power plant pressure components **Chemical Processing:** - Process vessels - Reaction chambers - Distillation columns - Chemical storage equipment **Industrial Applications:** - Industrial boilers - Process industry equipment - Manufacturing pressure vessels - Heavy equipment pressure components --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Good Weldability**: With proper procedure control - **Preheat Requirements**: 150-200°F (65-95°C) recommended for thicker sections - **Post-Weld Heat Treatment**: Stress relieving at 1100-1200°F (595-650°C) - **Recommended Processes**: SMAW, GMAW, FCAW, SAW - **Filler Metals**: E7018, ER70S-6 or equivalent **Forming & Machining:** - **Good Formability**: Suitable for most pressure vessel forming operations - **Machinability**: Fair to good (approximately 60% of B1112 steel) - **Cutting Methods**: Plasma, oxy-fuel, and mechanical cutting suitable - **Bend Performance**: Good for pressure vessel fabrication **Heat Treatment:** - Typically supplied in as-rolled or normalized condition - Normalizing temperature: 1600-1700°F (870-925°C) - Optional stress relieving available - Good response to thermal processing **Quality Assurance:** - **Mandatory Testing**: Tensile and chemical analysis - **Impact Testing**: When specified by purchaser - **Non-Destructive Testing**: As required by application - **Certification**: Full mill certification provided --- ### **Technical Summary** ASTM A299 carbon-manganese-silicon steel represents an economical intermediate-strength material for pressure vessel applications requiring better mechanical properties than conventional carbon steels. The manganese-silicon alloy system provides effective solid solution strengthening, delivering a minimum yield strength of 40 ksi (275 MPa) while maintaining good fabrication characteristics. This steel fills an important position in pressure vessel material selection, offering approximately 15-20% higher strength than carbon steels like A516 Grade 60, while remaining more economical than low-alloy steels. The balanced chemistry ensures good weldability and formability, making it suitable for a wide range of pressure vessel fabrication requirements. The material's reliable performance at moderate temperatures and its good notch toughness characteristics have established ASTM A299 as a preferred choice for boiler drums, pressure vessels, and other pressure-containing components in power generation, chemical processing, and industrial applications. The consistent quality and proven service history make it a trusted material for engineers designing pressure equipment where both performance and cost-effectiveness are important considerations. -:- For detailed product information, please contact sales. -: ASTM A299 Carbon Steel, Manganese Silicon Alloy Specification Dimensions Size： Diameter 20-1000 mm Length <4353 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 A299 Carbon Steel, Manganese Silicon Alloy Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A299 Carbon Steel Flange, Manganese Silicon Alloy -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A299 Carbon Steel Flange, Manganese Silicon Alloy -:- For detailed product information, please contact sales. -:

Packing of ASTM A299 Carbon Steel Flange, Manganese Silicon Alloy -:- 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 824 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