AISI 1090 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 1090 Steel Flange, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1090 Steel Flange, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1090 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1090 Steel, Cold Drawn, Spheroidized Annealed Round Bar (19-32 mm / 0.75-1.25 in)** #### **1. Overview** AISI 1090 (UNS G10900) in the **Cold Drawn, Spheroidized Annealed** condition represents the pinnacle of process-engineered high-carbon steel for severe forming applications. With a carbon content at the uppermost limit of standard grades, this material is inherently very hard and brittle in its normalized state. The spheroidized anneal is not merely beneficial but **essential** to transform it into a workable material, producing the softest, most ductile, and uniform microstructure possible. Combined with cold drawing for precision, this product is the definitive starting material for manufacturers who must perform complex cold shaping operations before achieving the ultimate in hardness, wear resistance, and edge retention through final heat treatment. --- #### **2. Chemical Composition (AISI/SAE Standard)** | Element | Content (%) | | :--- | :--- | | **Carbon (C)** | **0.85 - 0.98** | | **Manganese (Mn)** | 0.60 - 0.90 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.050 | | **Silicon (Si)** | 0.15 - 0.35 | | **Iron (Fe)** | Balance | **Note:** The carbon range (0.85-0.98%) positions AISI 1090 at the absolute peak of the standard high-carbon steel series. This chemistry enables the **maximum attainable hardness (~66-68 HRC)** and wear resistance for a non-alloy steel, but also demands meticulous heat treatment control. --- #### **3. Typical Physical & Mechanical Properties (As-Delivered)** *Properties are for the spheroidized annealed & cold-drawn state, optimized for maximum formability.* | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Spheroidized Annealed + Cold Drawn | | **Microstructure** | **Spheroidite** (Fine, globular carbides uniformly dispersed in a soft ferrite matrix) | | **Tensile Strength** | **570 - 740 MPa (83 - 107 ksi)** | | **Yield Strength (0.2% Offset)** | **480 - 650 MPa (70 - 94 ksi)** *(Enhanced by cold work)* | | **Elongation (in 50 mm)** | **≥ 10%** | | **Reduction in Area** | **≥ 40%** | | **Hardness** | **85 - 100 HRB** (Rockwell B) / **~ 160 - 225 HB** (Brinell) | | **Machinability** | **Good for its carbon level (~60% of AISI 1212).** The spheroidized structure offers good chip control, but the high volume fraction of carbides remains somewhat abrasive to tools. | | **Cold Formability** | **Excellent.** This is the *only* condition in which AISI 1090 can be safely cold formed. It allows for severe operations like cold heading, extrusion, and coiling without cracking. | | **Surface Finish & Tolerance** | Smooth, bright, scale-free surface with excellent dimensional accuracy and straightness (±0.05 mm to ±0.15 mm typical). | | **Hardenability Potential** | **Maximum for Carbon Steel.** After final forming, it can be quenched and tempered to achieve **65-68 HRC**, providing exceptional edge holding and abrasion resistance. | --- #### **4. Key Characteristics & Metallurgical Rationale** * **Mandatory Spheroidized Anneal:** Due to its extreme carbon content, AISI 1090 in any other microstructural state (pearlitic, as-rolled) is too brittle for reliable cold work. The spheroidizing process is a critical and non-negotiable preparatory step. * **Precision Cold Drawing:** Ensures tight dimensional tolerances, a superior surface finish free of decarburization, and introduces beneficial residual stresses that improve yield strength. * **Ultimate Performance Foundation:** This soft state is the necessary precursor to achieving the legendary performance of 1090 steel. The uniformity of the spheroidized structure is key to predictable and consistent hardening results. * **Sensitive to Overheating:** Due to the high carbon, subsequent austenitizing for hardening must be carefully controlled to prevent grain coarsening and retained austenite. --- #### **5. Primary Product Applications** This product is the specified feedstock for the most demanding applications where the limits of carbon steel performance are required. * **Ultra-High-Strength Cold Headed Fasteners:** **Critical aerospace, military, and high-performance automotive fasteners** requiring the highest strength-to-weight ratio from a steel fastener. * **Premium Cutting Tool Blanks:** The premier choice for blanks of **high-end knives (custom, tactical), surgical blades, precision cutters, and industrial blades** where supreme edge retention is non-negotiable. * **Highest-Stress Springs (Cold Coiled):** Wire for **valve springs in racing engines, high-cycle precision springs, and sensitive instrument springs** where maximum elastic limit and fatigue resistance are critical. * **Precision Machined Wear Components:** Parts such as **guillotine blades, textile cutters, and precision gauge parts** that are machined before hardening to a razor-sharp edge or precise dimension. * **Bearing and Tooling Blanks:** For components that are machined to final shape and then through-hardened for extreme wear life. --- #### **6. Relevant International & Industry Standards** | Standard System | Standard Designation | Title / Scope | | :--- | :--- | :--- | | **AISI / SAE / UNS (USA)** | **1090, SAE J403, UNS G10900** | Standard Grade Designation | | **ASTM (USA)** | **ASTM A1074** | **Key Standard:** Specification for Hot-Rolled and Spheroidized Annealed Steel Bars for Forging and Similar Applications. | | **ASTM (USA)** | **ASTM A29/A29M** | Specification for Steel Bars, Carbon and Alloy. Spheroidize annealing is an optional requirement. | | **ASTM (USA)** | **ASTM A510** | Specification for General Requirements for Wire Rods and Coarse Round Wire. | | **DIN / EN (Germany/EU)** | **1.1274 / C90W2 (+C)** or **1.1545 (+C)** | EN 10263-4: Steel rod, bars and wire for cold heading and cold extrusion. The "+C" denotes spheroidized annealed. | | **JIS (Japan)** | **SWRCH87A / SWRCH90A** | Carbon steel wires for cold heading (JIS G3507-1). | | **GB (China)** | **90# / T9(A)** | Cold Heading Steel (GB/T 6478) or Tool Steel equivalent. | --- ### **Processing Pathway & Critical Notes** 1. **Fabrication:** Perform all **cold heading, forging, extrusion, or precision machining** in this soft state. 2. **Stress Relieving (Mandatory after Severe Work):** A low-temperature stress relief (~345-425°C / 650-800°F) is critical after cold forming to prevent quench cracking. 3. **Heat Treatment (Requires Expert Precision):** * **Austenitize:** ~770-790°C (1420-1450°F). **Use a controlled atmosphere to prevent decarb.** Soak time must be sufficient but not excessive. * **Quench:** **Warm oil (40-60°C)** with strong agitation is standard. Water quenching is extremely high-risk and rarely used. * **Temper:** **Immediately and fully.** Double or triple tempering is common. Temperatures range from **150-200°C (300-400°F) for maximum hardness** to **350-450°C (660-840°F) for high-strength tools/springs**. 4. **Finishing:** Final grinding and polishing. **Weldability:** **Practically Non-Existent.** Welding is **strongly discouraged** and will almost certainly result in cracking. Any joining must be mechanical. **Summary:** **AISI 1090 Cold Drawn, Spheroidized Annealed round bar is the ultimate process-ready form of high-carbon steel.** It enables the manufacture of components that demand the **absolute maximum performance in hardness and strength from a non-alloy material.** Its use is justified only where the application justifies the additional cost and processing complexity, and where the manufacturer possesses the expertise to properly execute the final, delicate hardening process. This material is the choice for connoisseurs and engineers seeking to push carbon steel to its functional limits. -:- For detailed product information, please contact sales. -: AISI 1090 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4897 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 1090 Steel, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1090 Steel Flange, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1090 Steel Flange, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1090 Steel Flange, cold drawn, spheroidized annealed, 19-32 mm (0.75-1.25 in) round -:- 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 1368 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