Cast Stainless Steel Flange CD4MCu, ASTM A744M

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. -: Cast Stainless Steel Flange CD4MCu, ASTM A744M Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Flange CD4MCu, ASTM A744M Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CD4MCu, ASTM A744M Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Cast Stainless Steel CD4MCu, ASTM A744M** #### **1. Product Overview** Cast Stainless Steel CD4MCu under ASTM A744M specification is a premium duplex (austenitic-ferritic) stainless steel specifically designed for severe corrosive service conditions. This chromium-nickel-molybdenum-copper alloy offers an outstanding combination of high strength, exceptional corrosion resistance, and superior mechanical properties, making it particularly suitable for the most demanding applications in aggressive chemical environments, including those containing chlorides and other corrosive media. **Key Advantages:** - **Exceptional Corrosion Resistance:** Superior performance in severe corrosive environments, including chloride-rich conditions - **High Mechanical Strength:** Approximately double the yield strength of conventional austenitic stainless steels - **Excellent Stress Corrosion Cracking Resistance:** Outstanding performance in environments prone to SCC - **Superior Erosion-Corrosion Resistance:** Ideal for high-velocity fluid applications - **Good Wear and Abrasion Resistance:** Suitable for demanding service conditions --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A744/A744M:** Standard Specification for Castings, Iron-Chromium-Nickel, Iron-Chromium-Nickel-Molybdenum, Corrosion Resistant, for Severe Service Additional applicable standards: - **UNS J93370:** Unified Numbering System designation - **ASME SA744:** ASME Boiler and Pressure Vessel Code equivalent - **ISO 11972:** Corrosion-resistant cast steels for general applications --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is precisely controlled to maintain the optimal duplex microstructure and corrosion resistance properties. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.04 max | | Manganese (Mn) | 1.00 max | | Silicon (Si) | 1.00 max | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.04 | | Chromium (Cr) | 24.5-26.5 | | Nickel (Ni) | 4.75-6.00 | | Molybdenum (Mo) | 1.75-2.25 | | Copper (Cu) | 2.75-3.25 | | Nitrogen (N) | 0.10-0.25 | *Note: The balanced composition ensures approximately 40-60% ferrite in the austenitic matrix, optimized for severe service conditions.* --- #### **4. Mechanical Properties** Mechanical properties meet the stringent requirements of ASTM A744M for severe service applications. **Minimum Required Values (Heat-Treated Condition):** - **Tensile Strength:** 690 MPa (100 ksi) min - **Yield Strength (0.2% Offset):** 485 MPa (70 ksi) min - **Elongation in 2" (50 mm):** 20% min - **Reduction of Area:** 35% min - **Hardness:** 290 HBW max **Typical Achievable Properties:** - **Tensile Strength:** 760-930 MPa (110-135 ksi) - **Yield Strength:** 550-690 MPa (80-100 ksi) - **Elongation:** 25-35% - **Impact Energy:** 100-135 J (74-100 ft-lb) at room temperature --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.80 g/cm³ (0.282 lb/in³) - **Modulus of Elasticity:** 186 GPa (27,000 ksi) - **Poisson's Ratio:** 0.28 - **Thermal Conductivity:** 15.0 W/m·K (at 100°C) - **Specific Heat Capacity:** 500 J/kg·K (at 0-100°C) - **Coefficient of Thermal Expansion:** 13.0 × 10⁻⁶/°C (20-100°C) - **Magnetic Permeability:** Slightly magnetic due to ferritic phase content - **Electrical Resistivity:** 0.85 μΩ·m --- #### **6. Heat Treatment** **Standard Heat Treatment for Severe Service:** **Solution Annealing:** - Temperature: 1120-1170°C (2050-2140°F) - Soak time: 1-2 hours per inch of thickness, minimum 1 hour - Cooling: Rapid water quench to preserve optimal duplex microstructure - Microstructure Target: 40-60% ferrite in austenitic matrix **Critical Considerations:** - Avoid temperatures between 300-1000°C (570-1830°F) to prevent embrittlement phases - Strict control of cooling rate is essential for corrosion resistance - No stress relieving heat treatment permitted above 300°C (570°F) --- #### **7. Corrosion Resistance** CD4MCu offers exceptional corrosion resistance for severe service applications: - **Chloride Stress Corrosion Cracking:** Excellent resistance, superior to 300-series austenitic stainless steels - **Pitting and Crevice Corrosion:** Outstanding resistance with high Pitting Resistance Equivalent Number (PREN > 35) - **General Corrosion:** Excellent resistance to sulfuric, phosphoric, and organic acids - **Erosion-Corrosion:** Superior performance in high-velocity and slurry applications - **Intergranular Corrosion:** Excellent resistance when properly heat treated - **Galvanic Corrosion:** Good compatibility in mixed-material systems --- #### **8. Product Applications** CD4MCu under ASTM A744M is specified for the most demanding corrosive applications across multiple industries. **Primary Applications Include:** - **Chemical Processing Industry:** Reactors, columns, heat exchangers, and mixing vessels - **Oil and Gas Production:** Wellhead components, Christmas trees, valves, and flow control equipment - **Pump Components:** Casings, impellers, and diffusers for corrosive and abrasive services - **Marine and Offshore:** Seawater system components, propeller shafts, and marine hardware - **Pollution Control Equipment:** Scrubbers, absorbers, and wastewater treatment systems - **Pulp and Paper Industry:** Digester, bleaching, and chemical recovery equipment - **Power Generation:** Flue gas desulfurization systems and cooling water components --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Good castability with proper foundry techniques - Pattern shrinkage: 20-25 mm/m - Requires controlled solidification to maintain microstructure - Suitable for complex geometries and varying section sizes **Machining:** - More challenging than austenitic stainless steels - Use rigid setups and positive rake carbide tools - Recommended cutting speeds: 15-25 m/min (50-80 SFM) - High-pressure coolant recommended for optimal tool life **Welding:** - **Weldability:** Good with strict procedure control - Preheating: Generally not required - Interpass temperature: Maximum 150°C (300°F) - Filler metals: Over-alloyed duplex (25Cr-9Ni-3Mo) or nickel-base alloys - Post-weld heat treatment: Not recommended to avoid detrimental phase precipitation --- #### **10. Quality Assurance & Testing** - **Chemical Analysis:** Comprehensive analysis per ASTM A751 - **Mechanical Testing:** Full suite of tests per ASTM A370 - **Hardness Testing:** Multiple location verification per ASTM A370 - **Non-Destructive Examination:** - Radiographic testing per ASTM E94/E1032 - Liquid penetrant testing per ASTM E165/E1417 - Magnetic particle testing per ASTM E709/E1444 - **Corrosion Testing:** Optional per customer requirements - **Ferrite Content:** Measurement per ASTM A800/A800M (typically 35-55%) - **Microstructure Examination:** Phase balance and absence of detrimental phases - **Certification:** Full traceability with comprehensive test reports and heat treatment records --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CD4MCu under ASTM A744M is designed for severe service applications and requires strict control of chemical composition, heat treatment, and quality assurance procedures. The material's performance may vary based on specific service conditions, casting design, and manufacturing processes. Always consult the complete ASTM A744M standard and work with qualified materials engineers for critical applications. Proper quality control, including microstructure examination and corrosion testing, is essential for ensuring optimal performance in severe service environments. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CD4MCu, ASTM A744M Specification Dimensions Size： Diameter 20-1000 mm Length <4176 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. -: Cast Stainless Steel CD4MCu, ASTM A744M Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Flange CD4MCu, ASTM A744M -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Flange CD4MCu, ASTM A744M -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Flange CD4MCu, ASTM A744M -:- 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 647 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