Cast Stainless Steel Flange CA6NM, ASTM A743

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 A743 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Flange CA6NM, ASTM A743 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CA6NM, ASTM A743 Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Cast Stainless Steel CA6NM, ASTM A743** #### **1. Product Overview** Cast Stainless Steel CA6NM (UNS J91540) under ASTM A743 specification is a martensitic stainless steel designed for general corrosion-resistant applications. This 13% chromium, 4% nickel alloy offers an optimal balance of corrosion resistance, mechanical strength, and fabrication characteristics. The controlled low carbon content combined with nickel addition provides enhanced toughness and weldability compared to conventional martensitic stainless steels, making it suitable for a wide range of corrosive environments. **Key Advantages:** - **Excellent Corrosion Resistance:** Superior to standard martensitic stainless steels in various corrosive media - **Good Mechanical Properties:** High strength combined with adequate toughness - **Enhanced Weldability:** Low carbon content reduces susceptibility to welding cracks - **Outstanding Cavitation Erosion Resistance:** Ideal for hydraulic applications - **Versatile Application Range:** Suitable for various industrial environments --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A743/A743M:** Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, and Nickel-Base Corrosion-Resistant Alloys for General Application Additional applicable standards: - **UNS J91540:** Unified Numbering System designation - **ASME SA743:** 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 carefully balanced to optimize corrosion resistance and mechanical properties. | 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 | *Note: Copper content is typically limited to 0.50% maximum as a residual element.* --- #### **4. Mechanical Properties** Mechanical properties are determined in the heat-treated condition as required by ASTM A743. **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% - **Hardness:** 217-269 HBW **Typical Achievable Properties:** - **Tensile Strength:** 795-930 MPa (115-135 ksi) - **Yield Strength:** 585-760 MPa (85-110 ksi) - **Elongation:** 18-25% - **Impact Energy:** 54-81 J (40-60 ft-lb) at room temperature --- #### **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 Practice:** **Austenitizing:** - Temperature: 980-1065°C (1800-1950°F) - Soak time: 1 hour per inch of thickness minimum - Cooling: Air cool or oil quench **Tempering:** - Temperature range: 550-650°C (1025-1200°F) - Soak time: 2 hours per inch of thickness minimum - Cooling: Air cool - Double tempering is often employed for optimal toughness --- #### **7. Corrosion Resistance** - **Atmospheric:** Excellent resistance to industrial and marine atmospheres - **Fresh Water:** Very good resistance to fresh water, steam, and condensate - **Chemical Media:** - Good resistance to organic acids, alkalis, and salt solutions - Moderate resistance to dilute mineral acids - Limited resistance to strong acids and chlorides - **Pitting Resistance:** Moderate resistance to pitting corrosion - **Cavitation Erosion:** Excellent resistance in hydraulic applications --- #### **8. Product Applications** CA6NM under ASTM A743 finds extensive use in various industries requiring corrosion resistance and mechanical reliability. **Primary Applications Include:** - **Pump Components:** Casings, impellers, diffusers, and wear rings - **Valve Bodies:** Gate, globe, ball, and check valves for corrosive service - **Hydraulic Turbine Components:** Runners, gates, and structural parts - **Marine Equipment:** Propeller hubs, shaft sleeves, and seawater system components - **Chemical Processing:** Mixer blades, agitators, and process equipment parts - **Oil & Gas Industry:** Wellhead components, Christmas tree parts, and flow control equipment --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Good castability with proper foundry practices - Pattern shrinkage: 20-22 mm/m - Requires adequate feeding for soundness - Suitable for complex geometries and varying section sizes **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 and lubrication recommended **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 filler metals: E410NiMo or equivalent --- #### **10. Quality Assurance & Testing** - **Chemical Analysis:** Per ASTM A751 requirements - **Mechanical Testing:** Tensile tests per ASTM A370 - **Hardness Testing:** Brinell or Rockwell methods - **Non-Destructive Testing:** - Radiographic examination per ASTM E94 - Magnetic particle examination per ASTM E709 - Liquid penetrant examination per ASTM E165 - **Heat Treatment Certification:** Complete documentation of thermal cycles - **Quality Grades:** Meets ASTM A743 requirements for corrosion-resistant applications - **Certification:** Full traceability with mill test certificates --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CA6NM under ASTM A743 is designed for general corrosion-resistant applications and requires proper heat treatment to achieve optimal properties. The material's performance may vary based on specific service conditions, casting design, and heat treatment parameters. Always consult the complete ASTM A743 standard and qualified materials engineers for critical applications. Proper selection, fabrication, and quality control are essential for successful performance in corrosive environments. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CA6NM, ASTM A743 Specification Dimensions Size： Diameter 20-1000 mm Length <4170 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 A743 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Flange CA6NM, ASTM A743 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Flange CA6NM, ASTM A743 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Flange CA6NM, ASTM A743 -:- 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 641 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