MetalTek,ESCOLOY 45D® Cast UNS J93345 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. -: MetalTek ESCOLOY 45D® Cast UNS J93345 Duplex Stainless Steel Flange Product Information -:- For detailed product information, please contact sales. -: MetalTek ESCOLOY 45D® Cast UNS J93345 Duplex Stainless Steel Flange Synonyms -:- For detailed product information, please contact sales. -:

MetalTek ESCOLOY 45D® Cast UNS J93345 Duplex Stainless Steel Product Information -:- For detailed product information, please contact sales. -: # **Product Name: MetalTek ESCOLOY 45D® Cast Duplex Stainless Steel (UNS J93345)** ## **Introduction** MetalTek ESCOLOY 45D® (UNS J93345) is a **high-performance, copper-modified duplex (austenitic-ferritic) stainless steel casting alloy**, engineered to deliver a specialized balance of **high strength, excellent corrosion resistance, and superior wear characteristics**. As part of the established ESCOLOY® alloy family, it builds upon the duplex stainless steel foundation by incorporating strategic additions of copper and molybdenum. This composition is tailored to provide **exceptional resistance to stress corrosion cracking (SCC), pitting, and sulfuric acid attack**, making it a preferred material for demanding industrial applications, particularly in chemical processing and pulp and paper industries. ## **Key Features** * **Excellent Sulfuric Acid Resistance:** Specifically formulated to offer superior performance in sulfuric acid environments across a wide range of concentrations and temperatures, outperforming many standard stainless steels. * **High Strength & SCC Resistance:** Provides approximately double the yield strength of standard CF-8/CF-8M austenitic castings, coupled with excellent resistance to chloride-induced stress corrosion cracking. * **Enhanced Wear & Galling Resistance:** The copper content improves resistance to adhesive wear and galling in metal-to-metal contact applications, a valuable property for components like bushings and wear rings. * **Proven Performance in Aggressive Media:** A long-service-history alloy trusted for reliability in complex chemical mixtures containing chlorides, sulfates, and organic acids. --- ## **1. Chemical Composition (Typical Weight %)** The composition is optimized for sulfuric acid service and general corrosion resistance. | Element | Content (%) | Element | Content (%) | | :------------- | :------------ | :------------- | :---------- | | Chromium (Cr) | 24.0 - 27.0 | Nickel (Ni) | 4.5 - 6.5 | | Molybdenum (Mo)| 1.75 - 2.50 | **Copper (Cu)**| **1.50 - 2.50** | | Manganese (Mn) | ≤ 1.5 | Nitrogen (N) | 0.08 - 0.20* | | Silicon (Si) | ≤ 1.50 | Carbon (C) | ≤ 0.06 | | Phosphorus (P) | ≤ 0.040 | Sulfur (S) | ≤ 0.040 | | **Iron (Fe)** | **Balance** | | | **\*Note:** Nitrogen control is a feature of modern production for improved pitting resistance and strength. **Key Alloying Note:** The **copper (Cu)** content is critical for sulfuric acid resistance and improves anti-galling properties. The **molybdenum (Mo)** content enhances pitting resistance. **PREN Calculation:** PREN = %Cr + 3.3(%Mo) + 16(%N) ≈ **30 - 35** --- ## **2. Physical & Mechanical Properties (Typical - Heat Treated Condition)** | Property | Value / Range | | :-------------------------------------------- | :-------------------------------- | | Density | 7.7 - 7.8 g/cm³ | | Melting Range | ~1360 - 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 - 310 HBW | | **Impact Toughness (Charpy V-notch)** | **≥ 60 J at -30°C** | --- ## **3. Product Forms & Applications** **Available Product Forms:** * **Static and Shell Molded Sand Castings** * **Centrifugally Cast Tubes and Liners** * **Investment Castings** * **Finished Machined Components** **Primary Applications:** ESCOLOY 45D® is historically specified for severe chemical environments: * **Chemical Processing:** Pump casings, impellers, valve bodies, agitators, and mixer shafts for sulfuric acid production, pickling lines, and fertilizer (phosphate) industry equipment. * **Pulp & Paper Industry:** Digester impregnation vessels, liquor circulation pumps, black liquor evaporator components, and bleach plant equipment. * **Oil & Gas (Downstream):** Components in refining and gas processing units exposed to sulfidic and acidic conditions. * **General Industrial:** Fans, housings, and ducting for corrosive fume handling systems. --- ## **4. International Standards & Approvals** ESCOLOY 45D® is a proprietary alloy with established correlations to standard specifications. | Standard Type | Standard Number & Designation | Notes | | :------------------ | :--------------------------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------- | | **Unified Numbering System (UNS)** | **J93345** | The UNS designation for this specific copper-containing cast duplex alloy. | | **ASTM (USA)** | Historically correlates with **ASTM A890 Grade 1B (CD4MCu)** or similar specifications for duplex castings with Cu. | The alloy predates and may have compositional nuances compared to the generic CD4MCu specification. | | **Key Procurement Specification** | **MetalTek ESCOLOY 45D® Technical Datasheet** is the primary controlling document. | For guaranteed properties, the proprietary ESCOLOY 45D® specification must be referenced. | --- ## **Critical Foundry & Fabrication Note** ESCOLOY 45D® is a **specialist alloy requiring specific foundry and heat treatment knowledge**. 1. **Heat Treatment is Critical:** To achieve the optimal duplex microstructure and precipitate the copper for maximum corrosion and wear benefits, a **two-step heat treatment is typically required**. This involves a high-temperature solution anneal (e.g., 1040-1100°C) followed by a lower-temperature aging treatment (e.g., 550-650°C). The exact cycle is proprietary to MetalTek and essential for performance. 2. **Welding Considerations:** Welding is challenging due to the alloy's complex composition and heat treatment sensitivity. If repair is necessary, it should be performed using **nickel-based filler metals** (e.g., ENiCrMo-3) and must be followed by a **complete re-application of the full two-step heat treatment cycle** to restore properties. 3. **Application-Specific Selection:** The primary driver for selecting ESCOLOY 45D® is its **proven track record in sulfuric acid and complex chemical media**. It is less of a general-purpose duplex and more of a targeted solution for specific corrosive challenges. Consulting MetalTek's application engineers is strongly recommended. 4. **Procurement Requirement:** To ensure receipt of the genuine alloy with its guaranteed performance, the purchase order must explicitly specify **"MetalTek ESCOLOY 45D® (UNS J93345)"** and require certification documenting the **proprietary heat treatment cycle**. -:- For detailed product information, please contact sales. -: MetalTek ESCOLOY 45D® Cast UNS J93345 Duplex Stainless Steel Specification Dimensions Size： Diameter 20-1000 mm Length <7285 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 ESCOLOY 45D® Cast UNS J93345 Duplex Stainless Steel Properties -:- For detailed product information, please contact sales. -:

Applications of MetalTek ESCOLOY 45D® Cast UNS J93345 Duplex Stainless Steel Flange -:- For detailed product information, please contact sales. -: Chemical Identifiers MetalTek ESCOLOY 45D® Cast UNS J93345 Duplex Stainless Steel Flange -:- For detailed product information, please contact sales. -:

Packing of MetalTek ESCOLOY 45D® Cast UNS J93345 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 3756 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