Cast Stainless Steel Foil/Strip CF3, ASTM A744

Cast Stainless Steel Foil CF3, ASTM A744 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Foil CF3, ASTM A744 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CF3, ASTM A744 Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Cast Stainless Steel CF3, ASTM A744** #### **1. Product Overview** Cast Stainless Steel CF3 under ASTM A744 specification is an austenitic stainless steel casting alloy specifically designed for severe corrosive service conditions. As the cast equivalent of wrought 304L stainless steel, this low-carbon chromium-nickel alloy provides excellent corrosion resistance combined with good mechanical properties and outstanding weldability. The "CF3" designation indicates its low carbon content (0.03% maximum), which significantly reduces susceptibility to intergranular corrosion in welded components and heat-affected zones. **Key Advantages:** - **Exceptional Corrosion Resistance:** Superior performance in severe corrosive environments - **Low Carbon Content:** Maximum resistance to intergranular corrosion and carbide precipitation - **Excellent Weldability:** Can be welded without post-weld heat treatment requirements - **Good Mechanical Properties:** Balanced combination of strength, ductility, and toughness - **Severe Service Capability:** Meets stringent requirements for demanding applications --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A744/A744M:** Standard Specification for Castings, Iron-Chromium-Nickel, Iron-Chromium-Nickel-Molybdenum, Corrosion Resistant, for Severe Service Additional applicable standards: - **UNS J92500:** Unified Numbering System designation - **ASME SA744:** ASME Boiler and Pressure Vessel Code equivalent - **ISO 11972:** Corrosion-resistant cast steels for general applications - **EN 10283:** Corrosion resistant steel castings --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is precisely controlled to ensure optimal performance in severe service conditions. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.03 max | | Manganese (Mn) | 1.50 max | | Silicon (Si) | 2.00 max | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.04 | | Chromium (Cr) | 17.0-21.0 | | Nickel (Ni) | 8.0-12.0 | | Iron (Fe) | Balance | *Note: The low carbon content is critical for preventing chromium carbide precipitation in severe service environments.* --- #### **4. Mechanical Properties** Mechanical properties meet the stringent requirements of ASTM A744 for severe service applications. **Minimum Required Values (Solution Annealed Condition):** - **Tensile Strength:** 485 MPa (70 ksi) min - **Yield Strength (0.2% Offset):** 205 MPa (30 ksi) min - **Elongation in 2" (50 mm):** 35.0% min - **Reduction of Area:** 50.0% min **Typical Achievable Properties:** - **Tensile Strength:** 515-620 MPa (75-90 ksi) - **Yield Strength:** 240-310 MPa (35-45 ksi) - **Elongation:** 40-55% - **Hardness:** 140-160 HBW - **Impact Strength:** Excellent at cryogenic temperatures --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.90 g/cm³ (0.285 lb/in³) - **Modulus of Elasticity:** 193 GPa (28,000 ksi) - **Poisson's Ratio:** 0.28 - **Thermal Conductivity:** 16.2 W/m·K (at 100°C) - **Specific Heat Capacity:** 500 J/kg·K (at 0-100°C) - **Coefficient of Thermal Expansion:** 16.5 × 10⁻⁶/°C (20-100°C) - **Electrical Resistivity:** 0.72 μΩ·m - **Magnetic Permeability:** Essentially non-magnetic (μ ≈ 1.02) --- #### **6. Heat Treatment** **Solution Annealing Treatment (Mandatory):** - **Temperature Range:** 1040-1120°C (1900-2050°F) - **Soak Time:** 1 hour per inch of thickness, minimum 1 hour - **Cooling Method:** Rapid water quench or rapid air cool - **Microstructure:** Homogeneous austenitic structure **Critical Processing Requirements:** - Rapid cooling through 425-815°C (800-1500°F) range is essential - Prevents chromium carbide precipitation at grain boundaries - Ensures maximum corrosion resistance for severe service --- #### **7. Corrosion Resistance** CF3 offers exceptional corrosion resistance for severe service applications: - **General Corrosion:** Excellent resistance to a wide range of corrosive media - **Intergranular Corrosion:** Superior resistance due to low carbon content - **Stress Corrosion Cracking:** Good resistance in chloride environments - **Pitting and Crevice Corrosion:** Moderate resistance in chloride-containing solutions - **Oxidizing Environments:** Excellent resistance to nitric acid and other oxidizers - **Organic Acids:** Very good resistance to acetic, citric, and tartaric acids --- #### **8. Product Applications** CF3 under ASTM A744 is specified for severe service applications across multiple industries: **Primary Applications Include:** - **Chemical Processing Industry:** Reactors, columns, and heat exchangers handling corrosive chemicals - **Oil and Gas:** Downhole tools, valve bodies, and piping systems for corrosive service - **Pharmaceutical Industry:** Bioreactors, fermentation tanks, and high-purity fluid systems - **Food Processing:** Equipment for acidic food products and cleaning solutions - **Pulp and Paper:** Bleaching equipment and chemical recovery systems - **Pollution Control:** Scrubbers, waste treatment equipment, and emission control systems - **Marine Applications:** Seawater handling systems and offshore platform components --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Excellent castability with good fluidity and mold filling - Pattern shrinkage: 20-25 mm/m - Low hot tearing tendency - Suitable for complex geometries and thin sections **Machining:** - Good machinability in solution annealed condition - Work hardens rapidly - requires positive rake tools and rigid setups - Recommended cutting speeds: 20-35 m/min (65-115 SFM) - Use sharp tools and adequate cooling **Welding:** - **Weldability:** Excellent - Preheating: Not required - Interpass Temperature: Maintain below 150°C (300°F) - Filler Metals: E308L or ER308L - Post-weld Heat Treatment: Generally not required --- #### **10. Quality Assurance & Testing** - **Chemical Analysis:** Comprehensive analysis per ASTM A751 - **Mechanical Testing:** Full suite of tests per ASTM A370 - **Hardness Testing:** Multiple location verification - **Non-Destructive Examination:** - Radiographic testing per ASTM E94/E1032 - Liquid penetrant testing per ASTM E165/E1417 - Ultrasonic testing available as supplementary requirement - **Corrosion Testing:** Optional per customer requirements - **Certification:** Full traceability with comprehensive test reports - **Heat Treatment Documentation:** Complete thermal cycle records --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CF3 stainless steel under ASTM A744 is designed for severe service applications and requires strict adherence to specified chemical composition, heat treatment, and quality assurance procedures. The material's performance may vary based on specific service conditions, casting design, and manufacturing processes. Always consult the complete ASTM A744 standard and work with qualified materials engineers for critical applications. Proper quality control and adherence to specified heat treatment procedures are essential for ensuring optimal performance in severe service environments. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CF3, ASTM A744 Specification Dimensions Size： Diameter 20-1000 mm Length <4179 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 CF3, ASTM A744 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Foil CF3, ASTM A744 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Foil CF3, ASTM A744 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Foil/Strip CF3, ASTM A744 -:- 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 Foil/Strip 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 650 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