Cast Stainless Steel Flange CA6NM, ASTM A356

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 A356 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Flange CA6NM, ASTM A356 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CA6NM, ASTM A356 Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Cast Stainless Steel CA6NM, ASTM A356** #### **1. Product Overview** Cast Stainless Steel CA6NM under ASTM A356 specification is a martensitic stainless steel primarily used for heavy-section castings in high-temperature service. This grade combines excellent corrosion resistance with good mechanical properties at elevated temperatures, making it particularly suitable for steam turbine casings, valve bodies, and other power generation components. The controlled chemistry and specialized heat treatment ensure optimal performance in demanding high-temperature environments. **Key Advantages:** - **High Temperature Strength:** Maintains mechanical properties at elevated temperatures - **Good Corrosion Resistance:** Superior to carbon and low-alloy steels in corrosive environments - **Excellent Castability:** Suitable for producing large, complex castings - **Good Weldability:** Repairable with proper welding procedures - **Pressure-Rated:** Meets stringent requirements for pressure-containing parts --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A356/A356M:** Standard Specification for Steel Castings, Carbon, Low-Alloy, and Stainless Steel, Heavy-Walled for Steam Turbines Additional applicable standards: - **UNS J91540:** Unified Numbering System designation - **ASME SA356:** ASME Boiler and Pressure Vessel Code equivalent - **ASTM A703/A703M:** General Requirements for Steel Castings --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is optimized for high-temperature performance and corrosion resistance. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.06 max | | Manganese (Mn) | 0.50-1.00 | | Silicon (Si) | 0.60 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 composition may include residual elements within specified limits to enhance high-temperature properties.* --- #### **4. Mechanical Properties** Mechanical properties are determined in the heat-treated condition as required by ASTM A356. **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% **Elevated Temperature Properties (Typical at 400°C/750°F):** - **Tensile Strength:** 620 MPa (90 ksi) - **Yield Strength:** 480 MPa (70 ksi) - **Creep Strength:** Good resistance to creep deformation --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.75 g/cm³ (0.280 lb/in³) - **Modulus of Elasticity:** 200 GPa (29,000 ksi) at room temperature - **Modulus of Elasticity:** 175 GPa (25,000 ksi) at 400°C (750°F) - **Thermal Conductivity:** 25.5 W/m·K (at 100°C) - **Specific Heat Capacity:** 480 J/kg·K (at 400°C) - **Coefficient of Thermal Expansion:** 11.0 × 10⁻⁶/°C (20-400°C) - **Magnetic Permeability:** Magnetic in all conditions --- #### **6. Heat Treatment** **Standard Heat Treatment Sequence for Heavy Sections:** **Normalizing:** - Temperature: 1025-1070°C (1875-1950°F) - Soak time: 1 hour per inch of thickness minimum - Cooling: Air cool or forced air cool **Tempering:** - Temperature: 595-650°C (1100-1200°F) - Soak time: 4-8 hours depending on section size - Cooling: Air cool - Double tempering may be applied for optimal properties --- #### **7. High-Temperature Properties** - **Oxidation Resistance:** Good resistance to scaling up to 650°C (1200°F) - **Thermal Fatigue Resistance:** Excellent resistance to thermal cycling - **Creep Strength:** Suitable for long-term service at elevated temperatures - **Microstructural Stability:** Maintains stable microstructure during prolonged high-temperature exposure --- #### **8. Product Applications** CA6NM under ASTM A356 is extensively used in high-temperature, heavy-section applications primarily in power generation and industrial equipment. **Primary Applications Include:** - **Steam Turbine Casings:** High-pressure and intermediate-pressure casings - **Valve Bodies:** Main steam stop valves, control valves, and turbine bypass valves - **Pump Casings:** High-temperature pump components and boiler feed pump casings - **Turbine Components:** Blade carriers, diaphragms, and other internal turbine parts - **Power Generation Equipment:** Nuclear and fossil power plant components - **Industrial Machinery:** Large compressor casings and high-temperature process equipment --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Excellent castability for heavy sections - Pattern shrinkage: 18-22 mm/m - Requires careful solidification control - Suitable for castings up to several tons **Machining:** - Good machinability in heat-treated condition - Use carbide tools with positive rake angles - Recommended cutting speeds: 20-30 m/min (65-100 SFM) - Adequate cooling required to prevent work hardening **Welding:** - **Weldability:** Good with proper procedures - Preheating: 150-200°C (300-400°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 equivalent filler metals --- #### **10. Quality Assurance & Testing** - **Chemical Analysis:** Per ASTM A751 requirements - **Mechanical Testing:** Tensile tests per ASTM A370 from cast-on coupons - **Non-Destructive Testing:** - Radiographic examination per ASTM E94 - Magnetic particle examination per ASTM E709 - Ultrasonic examination for heavy sections - **Heat Treatment Certification:** Complete documentation of thermal cycles - **Quality Requirements:** Meets ASTM A356 Class 1 or 2 as specified - **Certification:** Full traceability with comprehensive mill test certificates --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CA6NM under ASTM A356 is specifically designed for heavy-walled castings in high-temperature service and requires strict adherence to the specification requirements. The properties and performance characteristics may vary based on specific heat treatment parameters, casting design, and service conditions. Always consult the complete ASTM A356 standard and work with qualified materials engineers for critical high-temperature applications. Proper quality control, non-destructive examination, and heat treatment verification are essential for components in power generation service. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CA6NM, ASTM A356 Specification Dimensions Size： Diameter 20-1000 mm Length <4169 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 A356 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Flange CA6NM, ASTM A356 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Flange CA6NM, ASTM A356 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Flange CA6NM, ASTM A356 -:- 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 640 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