Cast Stainless Steel Seamless tube CF3, UNS J92800

Cast Stainless Steel Seamless tube CF3, UNS J92800 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Seamless tube CF3, UNS J92800 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CF3, UNS J92800 Product Information -:- For detailed product information, please contact sales. -: ### **Technical Datasheet: Cast Stainless Steel CF3 (UNS J92800)** #### **1. Product Overview** UNS J92800 (CF3) is a low-carbon austenitic stainless steel casting alloy that provides excellent corrosion resistance and superior welding characteristics. As the cast equivalent of wrought 304L stainless steel, this alloy maintains the same favorable corrosion-resistant properties while offering enhanced castability for complex component manufacturing. The controlled low carbon content ensures maximum resistance to intergranular corrosion, making it particularly suitable for applications requiring extensive welding or operating in corrosive environments. **Key Advantages:** - **Superior Corrosion Resistance:** Excellent performance in various corrosive media - **Enhanced Weldability:** Low carbon content prevents carbide precipitation in heat-affected zones - **Excellent Cryogenic Properties:** Maintains toughness at low temperatures - **Good Mechanical Properties:** Balanced combination of strength and ductility - **Non-Magnetic Characteristics:** Suitable for electrical and electronic applications --- #### **2. International Standards** This product conforms to the following international standards: - **ASTM A743/A743M:** Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion-Resistant - **ASTM A744/A744M:** Castings, Iron-Chromium-Nickel, Corrosion-Resistant for Severe Service - **UNS J92800:** Unified Numbering System designation - **ASME SA743/SA744:** ASME Boiler and Pressure Vessel Code equivalents --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is carefully balanced to optimize corrosion resistance and mechanical properties. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.03 max | | Manganese (Mn) | 1.50 max | | Silicon (Si) | 2.00 max | | Phosphorus (P) | 0.04 max | | Sulfur (S) | 0.04 max | | Chromium (Cr) | 17.0-21.0 | | Nickel (Ni) | 8.0-12.0 | | Iron (Fe) | Balance | *Note: The composition ensures optimal austenitic structure stability and corrosion resistance.* --- #### **4. Mechanical Properties** Mechanical properties are guaranteed in the solution-annealed condition. **Minimum Required Values:** - **Tensile Strength:** 485 MPa (70 ksi) - **Yield Strength (0.2% Offset):** 205 MPa (30 ksi) - **Elongation in 2" (50 mm):** 35.0% - **Reduction of Area:** 50.0% **Typical Values:** - **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 (Charpy V-Notch):** >100 J at -196°C --- #### **5. Physical Properties** - **Density:** 7.90 g/cm³ (0.285 lb/in³) - **Modulus of Elasticity:** 193 GPa (28.0 x 10⁶ psi) - **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 - **Mean Coefficient of Thermal Expansion:** 16.5 μm/m·°C (20-100°C) - **Electrical Resistivity:** 0.72 μΩ·m - **Magnetic Permeability:** <1.02 (essentially non-magnetic) --- #### **6. Heat Treatment** **Solution Annealing:** - **Temperature:** 1040-1120°C (1900-2050°F) - **Soaking Time:** 1 hour per inch of thickness (minimum 1 hour) - **Cooling:** Rapid water quench or rapid air cool - **Purpose:** To dissolve carbides and achieve homogeneous austenitic structure **Important Considerations:** - Rapid cooling through 425-815°C (800-1500°F) range is critical - Prevents sensitization and chromium carbide precipitation - No precipitation hardening response --- #### **7. Corrosion Resistance** UNS J92800 offers excellent corrosion resistance in various environments: - **Atmospheric Conditions:** Excellent resistance to rural, urban, and industrial atmospheres - **Waters:** Good performance in fresh, brackish, and seawater - **Chemical Media:** - Excellent resistance to most organic chemicals - Good resistance to oxidizing acids (nitric acid) - Moderate resistance to reducing acids - **Special Characteristics:** - Excellent resistance to intergranular corrosion - Good stress corrosion cracking resistance - Moderate pitting and crevice corrosion resistance --- #### **8. Product Applications** UNS J92800 is widely used across multiple industries for corrosion-resistant applications: **Chemical Processing:** - Reactors and pressure vessels - Heat exchangers and condensers - Piping systems and valves **Food and Beverage:** - Processing equipment - Storage and mixing tanks - Pasteurizers and sterilizers **Pharmaceutical:** - Bioreactors and fermentation tanks - High-purity water systems - Process piping **Other Applications:** - Pulp and paper processing equipment - Water treatment components - Architectural and marine fittings --- #### **9. Fabrication Characteristics** **Casting:** - Excellent castability with good fluidity - Pattern shrinkage allowance: 20-25 mm/m - Low hot tearing tendency - Suitable for intricate designs **Machining:** - Good machinability in annealed condition - Work hardens rapidly during machining - Recommended tools: Positive rake angle carbide tools - Cutting speeds: 20-35 m/min (65-115 SFM) **Welding:** - **Excellent weldability** by all common methods - **Filler Metals:** E308L or ER308L - **Preheating:** Not required - **Post-Weld Heat Treatment:** Generally not required --- #### **10. Quality Assurance** - **Chemical Analysis:** Per ASTM A751 - **Mechanical Testing:** Per ASTM A370 - **Non-Destructive Testing:** - Radiographic examination (ASTM E94) - Liquid penetrant testing (ASTM E165) - **Certification:** Full traceability with mill test certificates - **Additional Testing:** Corrosion testing available upon request --- **Disclaimer:** This technical information is provided for reference purposes only. While every effort has been made to ensure accuracy, specific applications may require additional considerations. Always consult with qualified materials engineers and refer to the appropriate standards for critical applications. Performance characteristics may vary based on manufacturing processes, heat treatment, and service conditions. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CF3, UNS J92800 Specification Dimensions Size： Diameter 20-1000 mm Length <4180 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, UNS J92800 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Seamless tube CF3, UNS J92800 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Seamless tube CF3, UNS J92800 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Seamless tube CF3, UNS J92800 -:- 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 Seamless tube 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 651 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