Carlson 2205 (UNS S32205) Duplex Stainless Steel Rod/Bar

Carlson 2205 (UNS S32205) Duplex Stainless Steel Rod Product Information -:- For detailed product information, please contact sales. -: Carlson 2205 (UNS S32205) Duplex Stainless Steel Rod Synonyms -:- For detailed product information, please contact sales. -:

Carlson 2205 (UNS S32205) Duplex Stainless Steel Product Information -:- For detailed product information, please contact sales. -: **Product Name:** Carlson 2205 Duplex Stainless Steel (UNS S32205) **Introduction:** Carlson 2205 (UNS S32205) represents the **benchmark standard for duplex stainless steel performance**. This 22% chromium, 5% nickel, and molybdenum-nitrogen alloy possesses a balanced microstructure of approximately equal parts ferrite and austenite. It delivers an optimal combination of **exceptional strength, superior corrosion resistance, and excellent fabrication characteristics**. Specifically engineered to bridge the gap between standard austenitic steels (e.g., 316L) and higher-grade super duplex alloys, 2205 offers outstanding resistance to chloride stress corrosion cracking (SCC) and localized pitting/crevice corrosion, making it the most widely specified and trusted duplex grade globally. **Key Features:** * **Outstanding Strength:** Yield strength is **over double that of conventional 316L stainless steel**, enabling significant weight reduction and material savings in structural designs and pressure equipment. * **Superior Corrosion Resistance:** Excellent and predictable resistance to chloride-induced stress corrosion cracking, pitting, and crevice corrosion, validated by its high Pitting Resistance Equivalent Number (PREN ≥ 34). * **Excellent Fabricability:** Demonstrates good weldability and formability using industry-standard practices and appropriate duplex filler metals (e.g., ER2209). * **Proven Cost Efficiency:** Provides a superior lifecycle cost compared to nickel alloys for many aggressive environments, offering the best value proposition in the duplex family. --- **1. Chemical Composition (Typical Weight % - ASTM A240)** The composition is precisely balanced to ensure optimal phase stability and property consistency. | 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) | ≤ 2.00 | Copper (Cu) | ≤ 0.75* | | Silicon (Si) | ≤ 1.00 | Carbon (C) | ≤ 0.030 | | Phosphorus (P) | ≤ 0.030 | Sulfur (S) | ≤ 0.020 | | **Iron (Fe)** | **Balance** | | | ***Note on UNS S31803:** UNS S32205 has tighter compositional controls, specifically **higher minimum contents for Molybdenum (3.0% vs. 2.5%) and Nitrogen (0.14% vs. 0.08%)**. This ensures consistently higher pitting resistance and is the preferred specification for critical applications. Carlson 2205 meets the premium S32205 specification.* --- **2. Physical & Mechanical Properties (Typical at Room Temperature - Annealed Condition)** | Property | Value / Range | | :-------------------------------------------- | :-------------------------------- | | Density | 7.80 g/cm³ | | Melting Range | 1380 - 1445 °C | | Specific Heat Capacity (0-100°C) | 500 J/kg·K | | 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)** | **≥ 690 MPa** | | **Yield Strength (Rp0.2)** | **≥ 485 MPa** | | **Elongation (A in 50mm)** | **≥ 25 %** | | Hardness (Brinell) | ≤ 293 HBW | | **Pitting Resistance Equivalent (PREN)** | **PREN = %Cr + 3.3(%Mo) + 16(%N) ≥ 34** | | **Impact Toughness (Charpy V-notch, min.)** | **≥ 100 J at -40°C** | *The guaranteed high PREN and low-temperature toughness are key performance differentiators.* --- **3. Product Forms & Applications** **Available Product Forms:** * Plate, Sheet, and Strip * Seamless and Welded Pipe & Tubing (Process, Mechanical, Heat Exchanger) * Bar, Rod, Wire, and Forgings * Flanges, Fittings (ASME B16.9, B16.11), Fasteners, and Valves **Primary Applications:** * **Oil & Gas Industry:** Production tubing, flowlines, separators, heat exchangers, and pressure vessels in offshore, subsea, and sour (H₂S) service. **NACE MR0175/ISO 15156 compliant**. * **Chemical & Petrochemical Processing:** Reactors, columns, tanks, and piping for chlorides, organic acids, and aggressive chemical media. * **Pulp & Paper Industry:** Digester impregnation vessels, bleach plants, and liquor handling systems. * **Marine & Offshore:** Seawater cooling systems, pumps, valves, and propeller shafts. * **Desalination & Water Treatment:** High-pressure reverse osmosis (RO) membranes, piping, and pumps. * **Chemical Tankers:** Cargo tanks and unloading systems. * **Pollution Control:** Flue gas desulfurization (FGD) scrubbers and ducting. * **Architecture, Building & Construction (ABC):** Structural components, façades, and bridges in corrosive coastal atmospheres. --- **4. International Standards & Approvals** UNS S32205 is a globally standardized premium duplex grade with wide acceptance. | Standard Type | Standard Number & Designation | Notes | | :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Unified Numbering System (UNS)** | **S32205** | The premium designation with guaranteed higher Mo and N minima. | | **ASTM (USA)** | ASTM A240 (Plate/Sheet/Strip)
ASTM A790/A789 (Pipe & Tube)
ASTM A182 (Forgings & Fittings)
ASTM A276 (Bar) | The primary procurement standards; S32205 is now the dominant specification. | | **EN / EURONORM (Europe)** | **1.4462** (Common material number) | Covers both S31803 and S32205; specific requirements are defined by the purchasing standard. | | | EN 10088-2: Sheet/Plate
EN 10216-5: Seamless pressure tubes
EN 10253-4: Butt-welding fittings | | | **NACE MR0175 / ISO 15156** | **Compliant** (for defined environmental limits) | Mandatory for sour service in oil & gas. Requires controlled hardness (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:** For critical service, always specify **UNS S32205** over S31803 to guarantee the higher alloy content and consistent premium performance. Material must be supplied in the **solution annealed and quenched condition** to achieve the correct duplex microstructure. All fabrication, especially welding (using matching or over-alloyed consumables like ER2209), must follow qualified procedures to avoid the formation of detrimental secondary phases. Always require a **certified material test report (CMTR/MTR)** confirming compliance with the ordered specification. -:- For detailed product information, please contact sales. -: Carlson 2205 (UNS S32205) Duplex Stainless Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7272 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. -: Carlson 2205 (UNS S32205) Duplex Stainless Steel Properties -:- For detailed product information, please contact sales. -:

Applications of Carlson 2205 (UNS S32205) Duplex Stainless Steel Rod -:- For detailed product information, please contact sales. -: Chemical Identifiers Carlson 2205 (UNS S32205) Duplex Stainless Steel Rod -:- For detailed product information, please contact sales. -:

Packing of Carlson 2205 (UNS S32205) Duplex Stainless Steel Rod -:- 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 Rod 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 3743 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