Cast Stainless Steel Wire CA6NM, ASTM A356

Cast Stainless Steel Wire CA6NM, ASTM A356 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Wire 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 Wire CA6NM, ASTM A356 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Wire CA6NM, ASTM A356 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Wire 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 Wire 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