SAE 1572 Carbon Steel Flange

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. -: SAE 1572 Carbon Steel Flange, Composition Spec Product Information -:- For detailed product information, please contact sales. -: SAE 1572 Carbon Steel Flange, Composition Spec Synonyms -:- For detailed product information, please contact sales. -:

SAE 1572 Carbon Steel, Composition Spec Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: SAE 1572 (AISI 1572) Carbon Steel Composition Specification** **1. Material Overview** SAE 1572 is a **high-carbon, high-manganese, non-alloy (carbon) steel** defined primarily by its chemical composition. It is part of the **"15xx" series** within the SAE/AISI system, which is characterized by a deliberately elevated manganese content (typically above 1.00%) compared to standard "10xx" carbon steels. The specific combination of high carbon and high manganese in SAE 1572 makes it a **deep-hardening, high-strength steel** primarily used in applications where exceptional strength, hardness, and wear resistance are required after proper heat treatment. **2. Key Material Concept** The defining feature of SAE 1572 is the **synergistic effect of its composition**. The **high carbon (~0.72%)** provides the potential for high hardness and strength, while the **high manganese (~1.20%)** dramatically increases the steel's hardenability. This means thicker cross-sections can be through-hardened (transformed to martensite) during quenching, resulting in a more uniform, high-strength microstructure throughout the part, rather than just a hard surface with a softer core. This makes it superior to a simple 10xx series grade (e.g., 1072) for larger or more demanding components. **3. International Standard & Cross-References** This steel grade is recognized under several international and industry specifications: * **Primary Standard:** **SAE J403** (Chemical Compositions of SAE Carbon Steels) / **AISI 1572** * **UNS Designation:** **G15720** * **ASTM Standards:** * ASTM A29/A29M: Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought and Cold-Finished (covers this grade). * ASTM A510: Standard Specification for General Requirements for Wire Rods and Coarse Round Wire, Carbon Steel. * **AMS (Aerospace Material Specification):** Not typically used in aerospace; it is an industrial-grade material. * **European Approximate Equivalent:** **1.1264 (66Mn4)** according to DIN EN 10083-2. *Note: Direct equivalents are rare; European grades may have slightly different Mn ranges.* * **Japanese Approximate Equivalent:** **SUP9** (Spring Steel) according to JIS G4801 is a close functional match, though chemistries differ. **4. Chemical Composition (% by Weight, per SAE J403)** The following composition defines the SAE 1572 / UNS G15720 grade: | Element | Content Range (%) | Key Role | | :--- | :--- | :--- | | **Carbon (C)** | **0.70 – 0.75** | Primary hardening element. Provides high strength and wear resistance. | | **Manganese (Mn)** | **1.00 – 1.30** | Critical for deep hardenability, increases strength and toughness. | | **Phosphorus (P)** | **≤ 0.040** | Impurity; kept low to prevent cold brittleness. | | **Sulfur (S)** | **≤ 0.050** | Impurity; can be raised for "Resulturized" versions (1572R) to improve machinability. | | **Silicon (Si)** | **0.15 – 0.30** | Deoxidizer, contributes to strength. | | **Iron (Fe)** | **Balance** | Base metal. | **Note:** A common variant is **SAE 1572R (Resulturized)**, which has a higher Sulfur content (typically ~0.08-0.13%) to form manganese sulfide inclusions, significantly improving machinability in the annealed state at a slight cost to transverse ductility and toughness. **5. Typical Physical & Mechanical Properties** *Properties are highly dependent on the form (bar, wire) and thermal-mechanical condition (hot-rolled, annealed, cold-drawn, heat-treated). The values below are indicative ranges.* **A. Physical Properties:** * **Density:** 7.85 g/cm³ (0.284 lb/in³) * **Melting Point:** ~ 1420 – 1460°C (2590 – 2660°F) * **Modulus of Elasticity (E):** 190 – 210 GPa (28 – 30 x 10⁶ psi) * **Poisson’s Ratio:** 0.27 – 0.30 * **Thermal Conductivity:** ~ 48 W/m·K (at 20°C) **B. Mechanical Properties by Condition:** * **As-Hot-Rolled or Annealed (Machining State):** * **Tensile Strength:** 620 – 760 MPa (90 – 110 ksi) * **Yield Strength:** 380 MPa (55 ksi) min. * **Elongation:** 15% – 22% * **Hardness:** 187 – 229 HBW * **Purpose:** Optimized for formability and machinability prior to final heat treatment. * **Heat-Treated (Quenched & Tempered – Example):** * **Tensile Strength:** 1050 – 1400+ MPa (152 – 200+ ksi) * **Yield Strength:** 850 – 1200+ MPa (123 – 174+ ksi) * **Elongation:** 9% – 15% * **Hardness:** 35 – 55 HRC (adjustable via tempering temperature) * **Purpose:** Achieves final high-strength, high-wear-resistance state. **6. Processing & Fabrication Characteristics** * **Hardenability:** Excellent. The high Mn allows oil quenching of moderately large sections to achieve uniform, high hardness. * **Machinability (Annealed/HR):** Fair for standard 1572. **Good for 1572R (Resulturized)** due to sulfur inclusions that break chips. * **Weldability:** Poor. Preheating (200-315°C / 400-600°F) and Post-Weld Heat Treatment (PWHT) are mandatory to prevent cracking due to high carbon equivalent. Not recommended for welded structures. * **Forging Temperature:** 1150 – 900°C (2100 – 1650°F). * **Heat Treatment Cycle:** * **Austenitize/Quench:** Heat to 790-830°C (1450-1525°F), hold, then quench in oil. * **Tempering:** Immediately temper between 400-650°C (750-1200°F) to achieve desired hardness/toughness balance. **7. Primary Applications** SAE 1572 is predominantly used for heavy-duty, high-stress components that are subsequently heat-treated: * **Heavy-Duty Springs:** Primary application for coil springs, leaf springs (especially for railway freight cars, heavy trucks, and agricultural equipment). * **High-Strength Shafts & Axles:** Torsion bars, drive shafts, and axle shafts requiring a tough core and hard surface. * **Agricultural & Mining Wear Parts:** Plow shares, scraper blades, cutter bars, and bucket teeth. * **Forged Industrial Components:** Gears, connecting rods, and other high-strength forgings. * **Hand Tools:** High-strength wrenches, pry bars, and other impact tools. **8. Available Forms** * **Most Common:** Hot-rolled or cold-drawn round, flat, and square bars; wire rod (for spring coiling). * **Other Forms:** Forging billets. **Disclaimer:** This datasheet provides typical information for material selection. **Actual properties are determined by the final manufacturing process, section size, and heat treatment.** For engineering and design, always refer to certified material test reports from the supplier and conduct necessary validation tests for the specific application. The SAE 1572R variant should be specified explicitly if improved machinability is required. -:- For detailed product information, please contact sales. -: SAE 1572 Carbon Steel, Composition Spec Specification Dimensions Size： Diameter 20-1000 mm Length <5145 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. -: SAE 1572 Carbon Steel, Composition Spec Properties -:- For detailed product information, please contact sales. -:

Applications of SAE 1572 Carbon Steel Flange, Composition Spec -:- For detailed product information, please contact sales. -: Chemical Identifiers SAE 1572 Carbon Steel Flange, Composition Spec -:- For detailed product information, please contact sales. -:

Packing of SAE 1572 Carbon Steel Flange, Composition Spec -:- 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 1616 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