ASTM A213 T2 Alloy Steel Flange, Chromium Molybdenum

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 A213 T2 Alloy Steel Flange, Chromium Molybdenum Product Information -:- For detailed product information, please contact sales. -: ASTM A213 T2 Alloy Steel Flange, Chromium Molybdenum Synonyms -:- For detailed product information, please contact sales. -:

ASTM A213 T2 Alloy Steel, Chromium Molybdenum Product Information -:- For detailed product information, please contact sales. -: ## **Product Datasheet: ASTM A213 / ASME SA-213 T2 Alloy Steel Tube** **Product Overview** ASTM A213 T2 is a **chromium-molybdenum (Cr-Mo) low-alloy steel** specifically designed for seamless tubes in high-temperature service, particularly in **superheaters, reheaters, and heat exchangers**. It represents the foundational grade in the T-series alloy tube family, offering a cost-effective balance of elevated temperature strength, oxidation resistance, and microstructural stability beyond that of plain carbon-molybdenum steels (like A209 T1). With a nominal composition of 0.5% chromium and 0.5% molybdenum, T2 provides improved resistance to oxidation (scaling) and creep deformation at temperatures up to approximately 1000°F (538°C), making it a standard choice for power generation and process industry tubing. **Key International Standards** * **Primary Standard:** **ASTM A213 / A213M** - Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes. * **Governing Specification:** This product conforms to all requirements for **Grade T2** within ASTM A213. * **ASME Designation:** **SA-213 T2** - The mandatory ASME Boiler and Pressure Vessel Code (BPVC) designation for code-stamped equipment. * **Heat Treatment:** Typically supplied in the **annealed, normalized and tempered, or full-annealed** condition to achieve optimal microstructure, ductility, and dimensional stability for bending and welding. * **Related Standards:** Equivalent or closely related grades include **DIN 17175 13CrMo44**, **EN 10216-2 13CrMo4-5**, and **JIS G3462 STBA 20**. **Chemical Composition (Weight % - ASTM A213 T2 Requirements)** | Element | ASTM A213 T2 Requirement | Typical Range / Aim | | :--- | :--- | :--- | | **Carbon (C)** | 0.10 - 0.20% | 0.10 - 0.15% | | **Manganese (Mn)** | 0.30 - 0.61% | 0.40 - 0.60% | | **Phosphorus (P)** | 0.025% max | ≤ 0.020% | | **Sulfur (S)** | 0.025% max | ≤ 0.015% | | **Silicon (Si)** | 0.10 - 0.30% | 0.15 - 0.25% | | **Chromium (Cr)** | **0.50 - 0.81%** | 0.50 - 0.80% | | **Molybdenum (Mo)** | **0.44 - 0.65%** | 0.44 - 0.65% | | **Carbon Equivalent (C.E. IIW)** | -- | Typically 0.35 - 0.45 | **Physical & Mechanical Properties (Room Temperature)** | Property | Requirement (ASTM A213 T2) | Typical Performance / Notes | | :--- | :--- | :--- | | **Tensile Strength** | 60 ksi (415 MPa) min | 65 - 80 ksi (448 - 552 MPa) | | **Yield Strength (0.2% Offset)** | 30 ksi (205 MPa) min | 35 - 45 ksi (241 - 310 MPa) | | **Elongation in 2" (Min)** | 30% | 30 - 35% | | **Hardness (Approx., HB)** | -- | ~130-170 HB | | **Maximum Recommended Metal Temperature** | -- | **Up to ~1000°F (538°C)** for prolonged service. The chromium provides better oxidation resistance than T1, while molybdenum ensures creep strength. | | **Key Feature** | **Balanced Cr-Mo Alloy for Elevated Temperatures:** Provides a significant upgrade over plain carbon and C-Mo steels, offering a practical combination of **oxidation resistance (from Cr)** and **creep strength/microstructural stability (from Mo)** for a wide range of high-temperature, high-pressure tubing applications. | **Product Applications** ASTM A213 T2 tubes are a workhorse material in thermal energy systems and process heaters operating at elevated temperatures. * **Superheater & Reheater Tubes:** Primary and secondary superheater sections in fossil fuel power plant boilers. * **Heat Exchanger Tubes:** For high-temperature shell-and-tube exchangers in refinery catalytic reformers, hydrotreaters, and chemical processes. * **Process Heater Tubes:** Convection and radiant section tubes in direct-fired heaters in petrochemical plants. * **Boiler Tubes:** For high-pressure water-wall and generating sections in industrial boilers where temperatures exceed the capability of carbon steels. * **Steam Piping:** For high-temperature steam lines and headers within its temperature range. **Advantages & Fabrication Notes** * **Good Weldability:** Readily weldable using common processes (GTAW, GMAW, SMAW). However, proper procedure is crucial: * **Preheat:** Recommended at **300-400°F (149-204°C)** to prevent hydrogen-induced cracking. * **Low-Hydrogen Practice:** Mandatory (e.g., E8018-B2 electrodes for SMAW). * **Post-Weld Heat Treatment (PWHT):** **Required for most pressure equipment applications.** Typical PWHT range is **1100-1250°F (593-677°C)** to relieve stresses, temper the HAZ, and restore corrosion/creep resistance. **Slow cooling through the 1200-800°F (649-427°C) range is critical to prevent reheat cracking.** * **Oxidation Resistance:** The ~0.5% chromium content forms a more stable and protective oxide layer (scale) than on carbon steels, reducing metal loss and oxide spalling. * **Resistance to Graphitization & Creep:** The molybdenum content inhibits the detrimental breakdown of carbides (graphitization) and provides solid solution strengthening for improved creep resistance. * **Formability:** Good hot formability. Cold bending is possible but may require subsequent stress relief. Tube bending is common, and the material is supplied in a condition suitable for this. * **Code Compliance:** Fully recognized in the **ASME BPVC, Section I** and **Section VIII**, with published allowable stresses up to 1000°F (538°C). **Disclaimer:** This datasheet provides general information on **ASTM A213 T2 / SA-213 T2** alloy steel tubes. For procurement, specify the complete standard and grade (T2), along with required heat treatment, dimensions, and NDE (e.g., hydrostatic, eddy current). **Design must be based on ASME BPVC allowable stress values for the specific design temperature.** Welding procedure specifications (WPS) and PWHT cycles **must be qualified per ASME Section IX**. Special attention must be paid to the **cooling rate after PWHT** to avoid reheat cracking susceptibility inherent in Cr-Mo steels. Material selection and fabrication for pressure equipment must be overseen by qualified personnel. This material is not intended for low-temperature or severely corrosive service without proper evaluation. -:- For detailed product information, please contact sales. -: ASTM A213 T2 Alloy Steel, Chromium Molybdenum Specification Dimensions Size： Diameter 20-1000 mm Length <4697 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 A213 T2 Alloy Steel, Chromium Molybdenum Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A213 T2 Alloy Steel Flange, Chromium Molybdenum -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A213 T2 Alloy Steel Flange, Chromium Molybdenum -:- For detailed product information, please contact sales. -:

Packing of ASTM A213 T2 Alloy Steel Flange, Chromium Molybdenum -:- 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 1168 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