AISI 1080 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. -: AISI 1080 Steel Flange, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) Product Information -:- For detailed product information, please contact sales. -: AISI 1080 Steel Flange, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1080 Steel, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1080 Steel in the Heat-Treated Condition (Oil Quenched & Tempered at 480°C)** #### **1. Overview: A Specific Heat-Treated State** This datasheet describes **AISI 1080 steel in a specific, fully heat-treated condition**: oil-quenched from 815°C (1500°F) and tempered at 480°C (900°F). This thermal processing defines the material's final in-service properties. AISI 1080 is a very high-carbon steel, and this particular treatment regimen produces a classic **spring temper** or a high-strength structural temper. It optimizes the balance between tensile/elastic strength and a critical degree of toughness, sacrificing some maximum hardness for improved ductility and resistance to shock. This is a *service condition*, not a delivery form. **Treatment Rationale:** * **Oil Quench (from 815°C):** Austenitizing at 815°C fully dissolves carbides, followed by an oil quench. Oil provides a less severe cooling rate than water, minimizing the risk of distortion and quench cracking while still achieving full through-hardening to martensite in this grade. * **Temper at 480°C (900°F):** This high-temperature tempering significantly relieves the brittleness of the as-quenched martensite. It precipitates fine carbides, resulting in a tough, sorbitic microstructure with a high elastic limit—ideal for springs and high-stress components that must resist permanent deformation. --- #### **2. Base Material Chemical Composition (AISI/SAE 1080)** The starting composition is standard for this grade. | Element | Content (%) | | :--- | :--- | | **Carbon (C)** | **0.75 - 0.88** | | **Manganese (Mn)** | 0.60 - 0.90 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.050 | | **Silicon (Si)** | 0.15 - 0.35 | | **Iron (Fe)** | Balance | --- #### **3. Mechanical & Physical Properties in this Condition** *These are the final, in-service properties resulting from the specified heat treatment.* | Property | Typical Value / Description | | :--- | :--- | | **Microstructure** | **Tempered Martensite (Sorbite)** | | **Tensile Strength** | **1150 - 1300 MPa (167 - 189 ksi)** | | **Yield Strength (0.2% Offset)** | **1030 - 1170 MPa (149 - 170 ksi)** | | **Elongation (in 50 mm)** | **~ 8 - 12%** | | **Reduction in Area** | **~ 30 - 40%** | | **Hardness** | **38 - 44 HRC** (Rockwell C) / **~ 360 - 420 HB** | | **Modulus of Elasticity** | ~ 200 GPa (29,000 ksi) | | **Fatigue Strength** | High (Good resistance to cyclic loading in this temper) | | **Impact Toughness (Charpy V-notch)** | **Moderate.** Significantly higher than a low-temperature temper, but not as high as alloy steels. | | **Machinability** | **Poor.** Can only be machined with hard material techniques (grinding, EDM, carbide tools). | | **Weldability** | **Not Recommended.** The heat-treated condition is irreparably damaged by welding. | --- #### **4. Key In-Service Characteristics** * **High Elastic Limit & Yield Strength:** The foremost characteristic. This temper allows components to withstand very high static and cyclical stresses without taking a permanent set, making it perfect for springs. * **Good Toughness & Ductility Balance:** The 480°C temper provides a vital compromise, offering useful ductility and shock resistance while retaining very high strength. It is more resistant to brittle fracture than lower tempering temperatures. * **Excellent Wear Resistance:** While not at maximum hardness, the hardness of ~40 HRC still provides very good resistance to abrasion and galling. * **Dimensional Stability:** The high tempering temperature provides excellent stress relief, resulting in stable components under load. --- #### **5. Typical Applications for this Specific Temper** Components designed to leverage this specific balance of high yield strength and moderate toughness. * **Heavy-Duty Mechanical Springs:** The quintessential application. **Truck and railway leaf springs, large coil suspension springs, high-stress torsion bars.** * **Locking Mechanisms & Clamps:** High-strength parts that require both strength and a degree of resilience, such as **heavy-duty lock shackles, clamp bodies, and retaining rings.** * **Agricultural & Earth-Moving Wear Parts:** **Plow shares, scraper blades, grader edges** that require resistance to abrasion but must also withstand occasional impact. * **Hand Tools:** **Pry bars, heavy wrenches, and demolition tools** that cannot be fully brittle. * **Structural Components in Machines:** **Axles, pins, and linkages** that are subject to high, repeated loads but not extreme shock. --- #### **6. Relevant Standards & Specifications** The specification focuses on the **achieved properties** and the **process** for standard material. | Standard / Aspect | Relevance to this Condition | | :--- | :--- | | **Base Material Standard** | **AISI 1080 / SAE J403 / UNS G10800** | | **Heat Treatment Specification** | Often called out on engineering drawings as:
"Harden: Heat to 815°C (1500°F), quench in oil. Temper at 480°C (900°F) to a hardness of 38-44 HRC." | | **ASTM A29/A29M** | Provides standard chemistry for the base bar stock. | | **ASTM A689** | Specification for carbon and alloy steel bars for springs. Grade 1080 would be procured and processed to meet the required spring properties (which this temper achieves). | | **AMS 2771** | Aerospace standard for heat treatment of steel parts. Provides detailed procedures for time, temperature, and quenching media. | | **SAE J416** | Standard for heat treatment for carburizing and through-hardening steels. | --- ### **Critical Processing Notes & Design Considerations** 1. **This is a Final State:** Components are **fully machined and formed prior to this heat treatment**. Only grinding or finishing operations can be performed afterward. 2. **Decarburization Control:** During austenitizing, surface decarburization must be prevented (e.g., using atmosphere-controlled furnaces) as it creates a soft surface layer that drastically reduces fatigue life, especially in springs. 3. **Quench Medium:** **Oil quench is specified.** Using water would cause excessive internal stress and likely cracking. Using air would not harden it sufficiently. 4. **Tempering Imperative:** **Tempering must follow quenching immediately** to prevent cracking and achieve the desired toughness. The 480°C temperature is a target; final hardness is the controlling parameter. 5. **Not for Impact/Welding:** While tougher than a low temper, it is still not recommended for extreme impact or any welding. **Summary:** AISI 1080 oil-quenched and tempered at 480°C represents a classic, high-performance engineering state for carbon steel. It delivers an outstanding combination of **strength, resilience, and durability**, making it the benchmark treatment for demanding spring applications and high-stress structural components where reliable performance under load is critical. Its properties are a direct result of precise thermal processing applied to a high-carbon steel chemistry. -:- For detailed product information, please contact sales. -: AISI 1080 Steel, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) Specification Dimensions Size： Diameter 20-1000 mm Length <4871 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. -: AISI 1080 Steel, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1080 Steel Flange, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1080 Steel Flange, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) -:- For detailed product information, please contact sales. -:

Packing of AISI 1080 Steel Flange, oil quenched from 815°C (1500°F), tempered at 480°C (900°F) -:- 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 1342 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