MetalTek,MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Rod/Bar

MetalTek MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Rod Product Information -:- For detailed product information, please contact sales. -: MetalTek MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Rod Synonyms -:- For detailed product information, please contact sales. -:

MetalTek MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Product Information -:- For detailed product information, please contact sales. -: **Product Name:** MetalTek MTEK 2205 Cast Duplex Stainless Steel (UNS J92205 / ASTM A890 Grade 1B) **Introduction:** MetalTek MTEK 2205 is a premium **cast duplex (austenitic-ferritic) stainless steel** that serves as the **cast analog to the ubiquitous wrought 2205 (UNS S32205/S31803) alloy**. It is engineered to provide the **optimal balance of high strength and excellent corrosion resistance** in cast component form. This alloy delivers approximately double the yield strength of standard austenitic stainless steel castings (e.g., CF-8M/316) while offering superior resistance to chloride stress corrosion cracking (SCC), pitting, and crevice corrosion. MTEK 2205 is the industry's workhorse for converting the proven benefits of duplex stainless steel into complex, high-integrity cast parts for demanding applications. **Key Features:** * **Proven 2205 Performance in Cast Form:** Replicates the trusted strength-corrosion balance of wrought 2205, enabling direct material substitution for parts requiring casting manufacture. * **Exceptional Strength-to-Weight Advantage:** High yield strength allows for thinner sections, lighter components, and improved pressure ratings compared to standard austenitic cast steels. * **Superior Stress Corrosion Cracking (SCC) Resistance:** Outstanding resistance to chloride-induced SCC, a common failure mode for 300-series austenitic stainless steels in many process environments. * **Good Castability and Weldability:** Designed for reliable production of sound castings and can be repaired or fabricated using qualified procedures with appropriate duplex filler metals. --- **1. Chemical Composition (Typical Weight % - ASTM A890 1B)** The composition is balanced to achieve a stable ~50/50 austenite-ferrite microstructure in the heat-treated condition, mirroring the performance of wrought 2205. | Element | Content (%) | Element | Content (%) | | :------------- | :------------ | :------------- | :---------- | | Chromium (Cr) | 21.0 - 24.0 | Nickel (Ni) | 4.5 - 6.5 | | Molybdenum (Mo)| 2.5 - 3.5 | Nitrogen (N) | 0.08 - 0.20* | | Manganese (Mn) | ≤ 2.00 | Copper (Cu) | ≤ 1.00 | | Silicon (Si) | ≤ 1.50 | Carbon (C) | ≤ 0.06 | | Phosphorus (P) | ≤ 0.045 | Sulfur (S) | ≤ 0.045 | | **Iron (Fe)** | **Balance** | | | **\*Note:** Nitrogen is a critical alloying element. Modern foundry practice tightly controls nitrogen to the mid-to-upper end of the range for optimal properties, though it may not be explicitly listed on all legacy certificates. **PREN Calculation:** PREN = %Cr + 3.3(%Mo) + 16(%N) ≈ **32 - 36** --- **2. Physical & Mechanical Properties (Typical - Solution Annealed & Quenched)** | Property | Value / Range | | :-------------------------------------------- | :-------------------------------- | | Density | 7.7 - 7.8 g/cm³ | | Melting Range | ~1370 - 1440 °C | | Modulus of Elasticity | ~200 GPa | | **Tensile Strength (Rm)** | **690 - 860 MPa** | | **Yield Strength (Rp0.2)** | **≥ 485 MPa** | | **Elongation (A in 50mm)** | **≥ 18 %** | | Hardness (Brinell) | 240 - 300 HBW | | **Impact Toughness (Charpy V-notch)** | **≥ 80 J at -30°C** | | Maximum Recommended Service Temperature | ~300°C (to avoid embrittlement) | --- **3. Product Forms & Applications** **Available Product Forms:** * **Static and Shell Molded Sand Castings** * **Centrifugally Cast Pipes, Tubes, and Cylinders** * **Investment Castings (for precision parts)** * **Finished, Machined Components** **Primary Applications:** MTEK 2205 is the go-to cast duplex alloy for a vast range of industrial applications requiring a step-change in performance from standard stainless steel castings: * **Oil & Gas:** Pump casings, valve bodies, choke valves, wellhead components, and manifolds for offshore, subsea, and sour service. * **Chemical & Petrochemical Processing:** Mixer shafts, agitators, reactor internals, impellers, and casing rings for chloride and acid services. * **Pulp & Paper:** Impellers, fan wheels, and casing parts in bleach plants and chemical recovery systems. * **Marine & Offshore:** Seawater pump components, valve bodies, and fittings for shipboard and platform systems. * **Flue Gas Desulfurization (FGD):** Dampers, absorber tower nozzles, and agitators in pollution control scrubbers. * **Water & Wastewater:** Pump components for brackish and seawater applications. --- **4. International Standards & Approvals** As a cast alloy, MTEK 2205 aligns with standardized cast duplex specifications. | Standard Type | Standard Number & Designation | Notes | | :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Unified Numbering System (UNS)** | **J92205** | The standard UNS designation for this cast duplex alloy (CD4MCu / CD3MN). | | **ASTM (USA)** | **ASTM A890/A890M** | **Grade 1B** is the specific grade designation within this standard. | | | **ASTM A487** (Steel Castings Suitable for Pressure Service) - Can be supplied to Grade 1B or similar duplex requirements. | Common for pressure-retaining castings. | | **NACE MR0175/ISO 15156** | **Compliant (with proper heat treatment)** | Can be qualified for sour (H₂S) service, subject to specific heat treatment and maximum hardness requirements (typically ≤ 28 HRC). | | **ASME Boiler & Pressure Vessel Code** | **Section II, Part A** - Can be approved under SA-351 (investment) or SA-487 (sand) specifications. | For use in ASME pressure equipment. | | **Key Procurement Specification** | **MetalTek MTEK 2205 Technical Datasheet** alongside **ASTM A890 Grade 1B** or equivalent project specifications. | Defines MetalTek's specific foundry controls and guaranteed properties. | **Critical Foundry & Fabrication Note:** MTEK 2205 is a **specialist cast alloy**. To achieve its properties, castings **must** undergo a **full solution annealing heat treatment** (typically at 1025-1120°C followed by rapid quenching) to dissolve harmful secondary phases and achieve the correct ferrite-austenite balance. **Post-cast welding is feasible but requires strict control**, using duplex stainless steel filler metals (e.g., ER2209) and must be followed by a **local or full re-solution anneal and quench** to restore corrosion resistance in the heat-affected zone. Procurement must explicitly require **ASTM A890 Grade 1B (UNS J92205)** compliance, **certified heat treatment records**, and **mechanical test reports**. A ferrite content check (target 35-55%) is highly recommended for critical service. -:- For detailed product information, please contact sales. -: MetalTek MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7281 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. -: MetalTek MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Properties -:- For detailed product information, please contact sales. -:

Applications of MetalTek MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Rod -:- For detailed product information, please contact sales. -: Chemical Identifiers MetalTek MTEK 2205 Cast UNS J92205 Duplex Stainless Steel Rod -:- For detailed product information, please contact sales. -:

Packing of MetalTek MTEK 2205 Cast UNS J92205 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 3752 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