Cast Stainless Steel Flange CA6NM, ASTM A352

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 CA6NM, ASTM A352 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Flange CA6NM, ASTM A352 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CA6NM, ASTM A352 Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Cast Stainless Steel CA6NM, ASTM A352** #### **1. Product Overview** Cast Stainless Steel CA6NM is a martensitic stainless steel conforming to ASTM A352 specification, specifically designed for low-temperature pressure-containing applications. This grade is characterized by its excellent combination of corrosion resistance, good mechanical properties, and superior toughness at sub-zero temperatures. The controlled chemistry and heat treatment make it particularly suitable for critical applications in energy, chemical processing, and oil and gas industries where low-temperature service is required. **Key Advantages:** - **Excellent Low-Temperature Toughness:** Superior impact properties at sub-zero temperatures - **Good Corrosion Resistance:** Better than standard martensitic stainless steels - **High Strength:** Good mechanical strength properties - **Pressure-Rated:** Suitable for pressure-containing parts - **Good Weldability:** Better welding characteristics than higher carbon martensitic grades --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A352/A352M:** Standard Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-Temperature Service Additional applicable standards: - **UNS J91540:** Unified Numbering System designation - **ASME SA352:** ASME Boiler and Pressure Vessel Code equivalent - **ASTM A703/A703M:** Standard Specification for Steel Castings, General Requirements, for Pressure-Containing Parts --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is carefully balanced to achieve optimal low-temperature toughness and corrosion resistance. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.06 max | | Manganese (Mn) | 1.00 max | | Silicon (Si) | 1.00 max | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.03 | | Chromium (Cr) | 11.5-14.0 | | Nickel (Ni) | 3.5-4.5 | | Molybdenum (Mo) | 0.40-1.00 | | Copper (Cu), max | 0.50 | *Note: The low carbon content with nickel addition provides enhanced toughness and weldability.* --- #### **4. Mechanical Properties** Mechanical properties are determined in the heat-treated condition as required by ASTM A352. **Minimum Required Values (Heat-Treated Condition):** - **Tensile Strength:** 760 MPa (110 ksi) - **Yield Strength (0.2% Offset):** 550 MPa (80 ksi) - **Elongation in 2" (50 mm):** 15% - **Reduction of Area:** 35% **Impact Properties (Charpy V-Notch):** - **Test Temperature:** -73°C (-100°F) - **Minimum Average Energy:** 40 J (30 ft-lb) - **Minimum Single Value:** 27 J (20 ft-lb) --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.75 g/cm³ (0.280 lb/in³) - **Modulus of Elasticity:** 200 GPa (29,000 ksi) - **Poisson's Ratio:** 0.27-0.30 - **Thermal Conductivity:** 25.5 W/m·K (at 100°C) - **Specific Heat Capacity:** 460 J/kg·K (at 0-100°C) - **Coefficient of Thermal Expansion:** 10.5 × 10⁻⁶/°C (20-100°C) - **Magnetic Permeability:** Magnetic in all conditions --- #### **6. Heat Treatment** **Standard Heat Treatment Sequence:** **Austenitizing:** - Temperature: 980-1065°C (1800-1950°F) - Soak time: 1 hour per inch of thickness minimum - Cooling: Air cool or oil quench **Double Tempering:** - First temper: 595-620°C (1100-1150°F) - Second temper: 595-620°C (1100-1150°F) - Soak time: 2 hours per inch of thickness minimum each cycle - Cooling: Air cool after each tempering cycle --- #### **7. Corrosion Resistance** - **Atmospheric:** Excellent resistance to rural and industrial atmospheres - **Fresh Water:** Very good resistance to fresh water and steam - **Chemical:** Good resistance to mild chemicals and organic compounds - **Low Temperature:** Maintains excellent corrosion resistance at sub-zero temperatures - **Pitting Resistance:** Moderate resistance to chloride environments --- #### **8. Product Applications** CA6NM cast stainless steel is extensively used in low-temperature pressure-containing applications across various industries. **Primary Applications Include:** - **Valve Bodies & Components:** Gate valves, globe valves, and ball valves for cryogenic service - **Pump Casings & Impellers:** Cryogenic pumps, LNG pumps, and low-temperature process pumps - **Pressure Vessels:** Low-temperature storage tanks and pressure containers - **Oil & Gas Equipment:** Wellhead components, Christmas tree parts for arctic service - **Energy Industry:** Turbine components, hydroelectric parts, and power generation equipment - **Chemical Processing:** Low-temperature reactors and process equipment --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Good castability with proper foundry practices - Pattern shrinkage: 20-22 mm/m - Requires careful cooling control - Suitable for complex geometries **Machining:** - Good machinability in heat-treated condition - Use carbide tools with positive rake angles - Recommended cutting speeds: 25-35 m/min (80-115 SFM) - Adequate cooling required **Welding:** - **Weldability:** Good (with proper procedures) - Preheating: 100-200°C (200-400°F) - Interpass temperature: 200-250°C (400-480°F) - Post-weld heat treatment: Required at 595-620°C (1100-1150°F) - Recommended electrodes: E410NiMo or matching composition filler metals --- #### **10. Quality Assurance & Testing** - **Chemical Analysis:** Per ASTM A751 requirements - **Mechanical Testing:** Tensile tests per ASTM A370 from separately cast coupons - **Impact Testing:** Charpy V-notch tests at specified low temperatures - **Non-Destructive Testing:** Radiographic (ASTM E94), magnetic particle (ASTM E709), or liquid penetrant (ASTM E165) examination - **Heat Treatment Certification:** Complete documentation of double tempering cycles - **Quality Classes:** Meets ASTM A352 requirements for low-temperature service - **Certification:** Full traceability with mill test certificates including impact test results --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CA6NM is specifically designed for low-temperature pressure-containing applications and requires strict adherence to ASTM A352 requirements. The properties and performance characteristics may vary based on specific heat treatment parameters, casting design, and service conditions. Always consult the complete ASTM A352 standard and work with qualified materials engineers for critical pressure applications involving low-temperature service. Proper quality control and non-destructive examination are essential for pressure-containing components in low-temperature applications. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CA6NM, ASTM A352 Specification Dimensions Size： Diameter 20-1000 mm Length <4168 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 CA6NM, ASTM A352 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Flange CA6NM, ASTM A352 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Flange CA6NM, ASTM A352 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Flange CA6NM, ASTM A352 -:- 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 639 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