Outokumpu LDX 2101® Duplex Stainless Steel

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

Packing of Outokumpu LDX 2101® Duplex Stainless Steel -:- 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 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