AISI 1009 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 1009 Steel Flange Product Information -:- For detailed product information, please contact sales. -: AISI 1009 Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

AISI 1009 Steel Product Information -:- For detailed product information, please contact sales. -: ## **Product Specification: AISI 1009 Low Carbon Steel** ### **Product Designation** * **Standard Name:** AISI 1009 / SAE 1009 * **UNS Number:** G10090 * **Type:** Very Low Carbon, Non-Hardenable Plain Carbon Steel * **Common Forms:** Hot-rolled or cold-rolled sheet, strip, wire, rod, bar. * **Key Feature:** A borderline grade between ultra-low carbon (1005/1006) and standard mild steel, offering a subtle balance of slightly higher strength than 1006 while retaining excellent ductility and weldability. ### **Overview** AISI 1009 is a basic, low-carbon steel that occupies a transitional position in the carbon steel series. With a maximum carbon content of 0.15%, it provides a **modest increase in strength** over grades like 1005 and 1006, while still maintaining **very good ductility, formability, and outstanding weldability**. It is a general-purpose, economical steel used in applications where a small strength boost is beneficial but the ease of fabrication characteristic of mild steel remains essential. It cannot be strengthened by heat treatment and is typically supplied in the as-rolled or annealed condition. --- ### **1. Chemical Composition (Typical % by Weight, AISI/SAE Standard)** The composition is simple, with carbon as the primary variable differentiating it from lower grades. | Element | Content (%) | Role & Effect | | :--- | :--- | :--- | | **Carbon (C)** | 0.13 - 0.17 | **Defining element.** The higher end of the "very low carbon" range. Provides a noticeable increase in strength and hardness over 1006, while keeping formability and weldability high. | | **Manganese (Mn)** | 0.30 - 0.60 | Aids in deoxidation and provides solid solution strengthening. The range accommodates different strength levels. | | **Phosphorus (P)** | 0.040 max | Impurity; controlled to maintain cold workability. | | **Sulfur (S)** | 0.050 max | Impurity; can be adjusted for machinability (e.g., "resulturized" variants). | | **Silicon (Si)** | *Variable* | Depends on deoxidation practice (rimmed, capped, or killed). Typically low for good surface quality in formed parts. | | **Iron (Fe)** | Balance | Primary constituent. | --- ### **2. Physical & Mechanical Properties (Annealed/Hot-Rolled State)** **A. Physical Properties** * **Density:** 7.87 g/cm³ (0.284 lb/in³) * **Elastic Modulus (E):** 200 GPa (29,000 ksi) * **Poisson's Ratio:** 0.29 * **Thermal Conductivity:** ~61 W/m·K (High) * **Electrical Resistivity:** ~12.0 μΩ·cm (Good conductor) * **Magnetic Properties:** Strongly ferromagnetic. **B. Mechanical Properties (Typical, As-Hot-Rolled or Annealed)** *Properties are indicative and vary with processing (e.g., cold rolling increases strength).* * **Yield Strength (0.2% Offset):** 205 - 310 MPa (30 - 45 ksi) * **Tensile Strength:** 330 - 450 MPa (48 - 65 ksi) * **Elongation in 50 mm:** **25% - 35%** (Very good ductility) * **Hardness (Brinell):** 105 - 145 HB * **Machinability:** **Fair to Good.** Better than lower carbon grades (1005/1006) due to less gumminess, but not as good as free-machining steels with higher sulfur. * **Hardenability:** **Effectively none.** Cannot be strengthened by quenching. * **Formability:** Good for bending, roll forming, and moderate drawing (especially in killed steel qualities like DQ/DQSK equivalents). * **Weldability:** **Excellent.** Can be welded by all common processes without pre-heat or post-heat treatment. --- ### **3. Product Applications** AISI 1009 is used in a wide array of general manufacturing applications where a combination of reasonable strength, good formability, and weldability is required. * **General Fabrication & Sheet Metal:** * Cabinets, enclosures, ductwork, and panels for industrial equipment. * Brackets, frames, and supports. * **Automotive Non-Structural Components:** * Seat adjustment parts, brackets, non-critical shields, and interior trim components. * **Pipe & Tubing:** * Welded tubing for furniture, handrails, and low-pressure applications. * **Wire Products:** * General-purpose wire for fencing, mesh, and forming. * **Forging Stock:** * For small, simple forged parts like levers or hooks where higher strength than 1008 is desired. * **Hardware & Fasteners:** * Nuts, bolts, and washers (often cold-forged from wire). * **Base for Coating:** A good substrate for galvanizing or painting. --- ### **4. International Standards & Designations** AISI 1009 is a specific SAE grade; international equivalents often target a similar property range rather than an exact chemical match. | Standard System | Equivalent / Comparable Grade | Notes / Key Comparison | | :--- | :--- | :--- | | **SAE / AISI (USA)** | **SAE 1009 / AISI 1009** | The standard designation. | | **UNS (USA)** | **G10090** | Unified Numbering System. | | **ASTM (USA)** | **ASTM A36** (Structural), **ASTM A569** (Hot-Rolled Sheet), **ASTM A1011** (Sheet) | Often supplied under these broader specifications, which cover similar strength levels. | | **DIN / EN (Germany/EU)** | **S235JR (1.0038), DC03 (1.0346)** | **S235JR** is the common structural steel equivalent. **DC03** is the Drawing Quality sheet with similar formability intent. | | **JIS (Japan)** | **SS330, SPHC** | **SS330** for general structure; **SPHC** for hot-rolled sheet/plate. | | **GB (China)** | **Q235B, 15** | **Q235B** is the dominant structural steel equivalent in China. | | **ISO** | **ISO 630-2: E235B, ISO 3574: CR2** | E235B for structural steel; CR2 for commercial quality cold-rolled sheet. | --- ### **Key Considerations & Comparisons** * **vs. AISI 1006/1008:** AISI 1009 has **higher carbon**, thus **higher strength and hardness**, but **slightly lower ductility and formability**. Weldability remains excellent across all. * **vs. AISI 1010/1012:** AISI 1009 has **slightly lower carbon**, making it **more ductile and weldable**, but **less strong** than 1010+ grades. * **Quality Variants:** Like 1006/1008, it can be produced in different quality levels for sheet (e.g., Commercial Quality, Drawing Quality) based on deoxidation practice. * **Primary Advantage:** It offers a **simple, cost-effective strength upgrade** over the very lowest carbon steels without transitioning into the more specialized 10xx series grades. ### **Summary** **AISI 1009 is a versatile, general-purpose low-carbon steel that provides a practical middle ground in the mild steel family.** It delivers a **meaningful increase in as-rolled strength** compared to 1005/1006 while preserving the excellent weldability and good formability that define mild steel. Its value lies in its simplicity and adaptability for a broad range of fabricated components, structural parts, and formed products where performance requirements are moderate and cost-effectiveness is paramount. While not as precisely specified as some dedicated forming grades, it serves as a reliable and widely understood material for general engineering purposes, with clear functional equivalents in major international standards like **EN S235JR** and **GB Q235B**. -:- For detailed product information, please contact sales. -: AISI 1009 Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4741 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 1009 Steel Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1009 Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1009 Steel Flange -:- For detailed product information, please contact sales. -:

Packing of AISI 1009 Steel Flange -:- 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 1212 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