Outokumpu LDX 2101® 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 LDX 2101® Duplex Stainless Steel Flange Product Information -:- For detailed product information, please contact sales. -: Outokumpu LDX 2101® Duplex Stainless Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

Outokumpu LDX 2101® Duplex Stainless Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Name: Outokumpu LDX 2101® Duplex Stainless Steel (UNS S32101 / EN 1.4162)** ## **Introduction** Outokumpu LDX 2101® is a revolutionary **lean duplex stainless steel** engineered to deliver the **strength and stress corrosion cracking (SCC) resistance of duplex stainless steel at a highly competitive cost**. As a pioneering "low-nickel, high-manganese, high-nitrogen" duplex grade, it replaces expensive nickel with strategic additions of manganese and nitrogen. This innovative alloy design provides **approximately double the yield strength of standard austenitic grades like 304/304L**, along with superior resistance to chloride stress corrosion cracking, making it an **ideal, cost-efficient upgrade** for a wide range of structural and general industrial applications. ## **Key Features** * **High Strength & Significant Weight Savings:** Yield strength (~450 MPa min.) is about twice that of Type 304, enabling thinner sections and reduced weight in structures, tanks, and components. * **Excellent Stress Corrosion Cracking (SCC) Resistance:** Offers far superior resistance to chloride-induced SCC compared to 300-series austenitic steels, a key advantage in environments with chlorides or coastal atmospheres. * **Cost-Effective & Price-Stable:** The "lean" chemistry, with low nickel and no molybdenum, provides a lower and more stable alloy cost, offering an outstanding performance-to-price ratio. * **Good Fabricability & Weldability:** Can be welded and formed using standard techniques adapted for duplex stainless steels, with appropriate filler metals. --- ## **1. Chemical Composition (Typical Weight %)** The innovative composition minimizes nickel while maintaining a balanced duplex structure through nitrogen and manganese. | Element | Content (%) | Element | Content (%) | | :------------- | :------------ | :------------- | :---------- | | Chromium (Cr) | 21.0 - 22.0 | Nickel (Ni) | 1.35 - 1.70 | | Molybdenum (Mo)| 0.10 - 0.80 | **Nitrogen (N)**| **0.20 - 0.25** | | **Manganese (Mn)** | **4.0 - 6.0** | Copper (Cu) | 0.10 - 0.80 | | Silicon (Si) | ≤ 0.80 | Carbon (C) | ≤ 0.040 | | Phosphorus (P) | ≤ 0.035 | Sulfur (S) | ≤ 0.015 | | **Iron (Fe)** | **Balance** | | | **Key Alloying Innovation:** **High Manganese (Mn)** replaces a significant portion of Nickel (Ni) to stabilize the austenite phase. **High Nitrogen (N)** is the primary strengthener and ensures a balanced microstructure. **PREN Calculation:** PREN = %Cr + 3.3(%Mo) + 16(%N) ≈ **26 - 29** --- ## **2. Physical & Mechanical Properties (Typical - Annealed Condition)** | Property | Value / Range | | :-------------------------------------------- | :-------------------------------- | | Density | 7.8 g/cm³ | | Thermal Conductivity (20°C) | ~17 W/m·K | | Coefficient of Thermal Expansion (20-100°C) | ~13.5 x 10⁻⁶ /K | | Modulus of Elasticity | 200 GPa | | **Tensile Strength (Rm)** | **650 - 850 MPa** | | **Yield Strength (Rp0.2)** | **≥ 450 MPa** | | **Elongation (A in 50mm)** | **≥ 30 %** | | Hardness (Brinell) | 260 - 320 HBW | | **Impact Toughness (Charpy V-notch)** | **> 100 J at -40°C** | --- ## **3. Product Forms & Applications** **Available Product Forms:** * Sheet and Plate * Coil and Strip * Bar and Wire * Welded Pipe and Tube **Target Applications (Upgrading from 304/316):** LDX 2101® is ideal where higher strength or SCC resistance is needed at a competitive cost: * **Construction & Architecture:** Roofing, cladding, structural sections, reinforcement bars (rebar), bridges, and walkways, especially in coastal or de-icing salt environments. * **Transportation:** Train wagons, truck frames, containers, and trailer bodies for weight reduction and durability. * **Water & Energy:** Water storage tanks, pressure vessels, penstocks, and structural parts in desalination plants. * **Pulp & Paper:** Vessel and tank components, structural supports. * **Material Handling:** Hoppers, containers, and conveyor systems. * **Food & Beverage:** Structural supports and non-critical process components. * **Heat Exchangers:** For cooling water systems with moderate chloride levels. --- ## **4. International Standards & Approvals** LDX 2101® is a globally recognized and standardized lean duplex grade. | Standard Type | Standard Number & Designation | Notes | | :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Unified Numbering System (UNS)** | **S32101** | The standard UNS designation for this alloy. | | **EN / EURONORM (Europe)** | **1.4162** | The common European material number. | | | EN 10088-2: Sheet/Plate/Strip
EN 10088-3: Bars/Rods/Wire
EN 10216-5: Seamless pressure tubes | Widely covered in European product standards. | | **ASTM (USA)** | **ASTM A240** (Plate/Sheet/Strip)
**ASTM A789/A790** (Seamless/Welded Pipe & Tube)
**ASTM A276** (Bar) | Fully standardized in key ASTM material specifications. | | **Other Standards** | JIS G4304 / G4305 (Japan)
GB/T 20878 (China) | Included in major national standards. | --- ## **Important Technical & Procurement Note** LDX 2101® is a **proprietary Outokumpu product that meets international standards**. For procurement, specifying **"UNS S32101"** or **"EN 1.4162"** alongside the Outokumpu brand name ensures receipt of the original grade with consistent properties. * **Fabrication:** Welding requires lean duplex or slightly over-alloyed filler metals (e.g., 2209 type) under controlled heat input. Forming requires about 20-30% higher forces than for 304. * **Selection Rationale:** Its primary advantages are **high strength** and **SCC resistance** at a **lower alloy cost** than standard duplex. Its corrosion resistance sits between 304L and 316L, making it unsuitable for highly aggressive pitting environments where 2205 is required. * **Certification:** Always require a **material test certificate (MTC/CMTR)** confirming compliance with the ordered standard and showing the unique low-nickel, high-manganese, high-nitrogen chemistry. -:- For detailed product information, please contact sales. -: Outokumpu LDX 2101® Duplex Stainless Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7286 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 LDX 2101® Duplex Stainless Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Outokumpu LDX 2101® Duplex Stainless Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers Outokumpu LDX 2101® Duplex Stainless Steel Flange -:- For detailed product information, please contact sales. -:

Packing of Outokumpu LDX 2101® 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 3757 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