Cast Stainless Steel Rod/Bar CA6NM, ASTM A352

Cast Stainless Steel Rod CA6NM, ASTM A352 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Rod 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 Rod CA6NM, ASTM A352 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Rod CA6NM, ASTM A352 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Rod 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 Rod 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