Outokumpu 2205 Duplex Stainless 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. -: Outokumpu 2205 Duplex Stainless Steel Flange Product Information -:- For detailed product information, please contact sales. -: Outokumpu 2205 Duplex Stainless Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Outokumpu 2205 Duplex Stainless Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Name: Outokumpu 2205 Duplex Stainless Steel (UNS S32205 / EN 1.4462)** ## **Introduction** Outokumpu 2205 is the **global benchmark for duplex stainless steel**, setting the industry standard for performance and reliability. This 22% chromium, 3% molybdenum, and nitrogen-alloyed steel possesses a balanced microstructure of approximately equal parts austenite and ferrite. It delivers an **exceptional synergy of high strength, superior corrosion resistance, and excellent cost-effectiveness**. Outokumpu 2205 is specifically engineered to provide **outstanding resistance to chloride stress corrosion cracking (SCC), pitting, and crevice corrosion**, making it the most widely specified duplex grade worldwide for demanding environments in oil & gas, chemical processing, and marine applications. ## **Key Features** * **Exceptional Strength-to-Weight Ratio:** Yield strength (~450 MPa min.) is **over double that of standard austenitic grades like 316L**, enabling significant weight reduction, material savings, and higher pressure ratings in design. * **Superior and Proven Corrosion Resistance:** Excellent resistance to chloride-induced stress corrosion cracking (SCC) and robust resistance to pitting and crevice corrosion, with a guaranteed Pitting Resistance Equivalent Number (PREN) ≥ 34. * **Excellent Fabricability and Weldability:** Designed for reliable welding and forming using established industry practices and matching duplex filler metals (e.g., 2209 type). * **Optimal Lifecycle Cost:** Offers the best value proposition within the duplex family, bridging the gap between standard stainless steels and more expensive super duplex or nickel alloys. --- ## **1. Chemical Composition (Typical Weight % - Outokumpu Specification)** The composition is precisely controlled to ensure a stable, balanced microstructure and consistent, premium performance. | Element | Content (%) | Element | Content (%) | | :------------- | :------------ | :------------- | :---------- | | Chromium (Cr) | 22.0 - 23.0 | Nickel (Ni) | 4.5 - 6.5 | | Molybdenum (Mo)| **3.0 - 3.5** | **Nitrogen (N)**| **0.14 - 0.20** | | Manganese (Mn) | ≤ 2.0 | Copper (Cu) | ≤ 0.20 | | Silicon (Si) | ≤ 0.8 | Carbon (C) | ≤ 0.030 | | Phosphorus (P) | ≤ 0.035 | Sulfur (S) | ≤ 0.015 | | **Iron (Fe)** | **Balance** | | | **Key Quality Differentiator:** Outokumpu 2205 meets the premium **UNS S32205** specification, guaranteeing the higher minimum contents of Molybdenum (≥3.0%) and Nitrogen (≥0.14%) for superior, consistent pitting resistance compared to UNS S31803. **PREN Calculation:** PREN = %Cr + 3.3(%Mo) + 16(%N) ≥ **34** (Typically 35-36) --- ## **2. Physical & Mechanical Properties (Typical - Solution Annealed Condition)** | Property | Value / Range | | :-------------------------------------------- | :-------------------------------- | | Density | 7.80 g/cm³ | | Thermal Conductivity (20°C) | 19 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | 13.7 x 10⁻⁶ /K | | Modulus of Elasticity | 200 GPa | | **Tensile Strength (Rm)** | **700 - 900 MPa** | | **Yield Strength (Rp0.2)** | **≥ 500 MPa** | | **Elongation (A in 50mm)** | **≥ 25 %** | | Hardness (Brinell) | 240 - 300 HBW | | **Impact Toughness (Charpy V-notch, min.)** | **≥ 100 J at -40°C** | | Maximum Recommended Service Temperature | ~300°C | --- ## **3. Product Forms & Applications** **Available Product Forms:** * Plate, Sheet, and Coil * Seamless and Welded Pipe & Tube (Process, Mechanical, Heat Exchanger) * Bar, Rod, Wire, and Hollow Bar * Flanges, Fittings, and Forgings **Primary Applications:** Outokumpu 2205 is the quintessential duplex grade for severe environments across major industries: * **Oil & Gas Industry:** Production tubing, flowlines, separators, heat exchangers, and pressure vessels in offshore, subsea, and sour (H₂S) service. Fully compliant with **NACE MR0175/ISO 15156**. * **Chemical & Petrochemical Processing:** Reactors, columns, tanks, and piping for chlorides, organic acids, and aggressive chemical media. * **Pulp & Paper Industry:** Digester vessels, bleach plants, and liquor handling systems. * **Marine & Offshore:** Seawater cooling systems, pumps, valves, and structural components. * **Desalination & Water Treatment:** High-pressure reverse osmosis (RO) membranes, piping, and pumps. * **Pollution Control:** Flue gas desulfurization (FGD) scrubbers, ducting, and absorber towers. * **Architecture & Construction:** Structural components and bridges in highly corrosive coastal and industrial atmospheres. --- ## **4. International Standards & Approvals** Outokumpu 2205 is universally recognized and meets all major international standards for premium duplex stainless steel. | Standard Type | Standard Number & Designation | Notes | | :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Unified Numbering System (UNS)** | **S32205** | The premium duplex designation. Outokumpu 2205 is supplied to this specification. | | **EN / EURONORM (Europe)** | **1.4462** | The standard European designation. | | | EN 10088-2: Sheet/Plate
EN 10216-5: Seamless pressure tubes
EN 10253-4: Butt-welding fittings | | | **ASTM (USA)** | **ASTM A240** (Plate/Sheet/Strip)
**ASTM A790/A789** (Pipe & Tube)
ASTM A182 (Forgings)
ASTM A276 (Bar) | The primary procurement standards. | | **NACE MR0175 / ISO 15156** | **Fully Compliant** | Approved for sour service (H₂S environments) within defined limits. Requires hardness control (typically ≤ 32 HRC). | | **ASME Boiler & Pressure Vessel Code** | **Section II, Part A** (SA-240, SA-789, etc.) | Approved for pressure-retaining applications. | | **Other Standards** | JIS G4304 / G4305 (Japan) - SUS 329J3L
GB/T 20878 (China) - 022Cr22Ni5Mo3N
AS 4677 (Australia) - 2205 | Widely adopted in national standards. | --- ## **Important Technical & Procurement Note** To guarantee receipt of the premium grade, always specify **"Outokumpu 2205 to UNS S32205"** or **"EN 1.4462"**. Material must be supplied in the **solution annealed and quenched condition**. * **Fabrication & Welding:** Requires qualified procedures. Welding must use appropriate duplex consumables (e.g., AWS A5.9 ER2209) with controlled heat input. * **Certification:** Require a **material test certificate (MTC/CMTR)** confirming compliance with UNS S32205, showing the chemical analysis (ensuring Mo ≥ 3.0%, N ≥ 0.14%) and mechanical properties. * **Outokumpu Advantage:** As the original developer and a major producer, Outokumpu provides guaranteed consistency, deep technical expertise, and a full range of product forms. -:- For detailed product information, please contact sales. -: Outokumpu 2205 Duplex Stainless Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7288 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. -: Outokumpu 2205 Duplex Stainless Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Outokumpu 2205 Duplex Stainless Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Outokumpu 2205 Duplex Stainless Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Outokumpu 2205 Duplex Stainless 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 3759 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