Cast Stainless Steel Sheet,Plate CD4MCu, ASTM A744M

Cast Stainless Steel Sheet/Plate CD4MCu, ASTM A744M Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Sheet/Plate CD4MCu, ASTM A744M Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CD4MCu, ASTM A744M Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Cast Stainless Steel CD4MCu, ASTM A744M** #### **1. Product Overview** Cast Stainless Steel CD4MCu under ASTM A744M specification is a premium duplex (austenitic-ferritic) stainless steel specifically designed for severe corrosive service conditions. This chromium-nickel-molybdenum-copper alloy offers an outstanding combination of high strength, exceptional corrosion resistance, and superior mechanical properties, making it particularly suitable for the most demanding applications in aggressive chemical environments, including those containing chlorides and other corrosive media. **Key Advantages:** - **Exceptional Corrosion Resistance:** Superior performance in severe corrosive environments, including chloride-rich conditions - **High Mechanical Strength:** Approximately double the yield strength of conventional austenitic stainless steels - **Excellent Stress Corrosion Cracking Resistance:** Outstanding performance in environments prone to SCC - **Superior Erosion-Corrosion Resistance:** Ideal for high-velocity fluid applications - **Good Wear and Abrasion Resistance:** Suitable for demanding service conditions --- #### **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 J93370:** Unified Numbering System designation - **ASME SA744:** 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 precisely controlled to maintain the optimal duplex microstructure and corrosion resistance properties. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.04 max | | Manganese (Mn) | 1.00 max | | Silicon (Si) | 1.00 max | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.04 | | Chromium (Cr) | 24.5-26.5 | | Nickel (Ni) | 4.75-6.00 | | Molybdenum (Mo) | 1.75-2.25 | | Copper (Cu) | 2.75-3.25 | | Nitrogen (N) | 0.10-0.25 | *Note: The balanced composition ensures approximately 40-60% ferrite in the austenitic matrix, optimized for severe service conditions.* --- #### **4. Mechanical Properties** Mechanical properties meet the stringent requirements of ASTM A744M for severe service applications. **Minimum Required Values (Heat-Treated Condition):** - **Tensile Strength:** 690 MPa (100 ksi) min - **Yield Strength (0.2% Offset):** 485 MPa (70 ksi) min - **Elongation in 2" (50 mm):** 20% min - **Reduction of Area:** 35% min - **Hardness:** 290 HBW max **Typical Achievable Properties:** - **Tensile Strength:** 760-930 MPa (110-135 ksi) - **Yield Strength:** 550-690 MPa (80-100 ksi) - **Elongation:** 25-35% - **Impact Energy:** 100-135 J (74-100 ft-lb) at room temperature --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.80 g/cm³ (0.282 lb/in³) - **Modulus of Elasticity:** 186 GPa (27,000 ksi) - **Poisson's Ratio:** 0.28 - **Thermal Conductivity:** 15.0 W/m·K (at 100°C) - **Specific Heat Capacity:** 500 J/kg·K (at 0-100°C) - **Coefficient of Thermal Expansion:** 13.0 × 10⁻⁶/°C (20-100°C) - **Magnetic Permeability:** Slightly magnetic due to ferritic phase content - **Electrical Resistivity:** 0.85 μΩ·m --- #### **6. Heat Treatment** **Standard Heat Treatment for Severe Service:** **Solution Annealing:** - Temperature: 1120-1170°C (2050-2140°F) - Soak time: 1-2 hours per inch of thickness, minimum 1 hour - Cooling: Rapid water quench to preserve optimal duplex microstructure - Microstructure Target: 40-60% ferrite in austenitic matrix **Critical Considerations:** - Avoid temperatures between 300-1000°C (570-1830°F) to prevent embrittlement phases - Strict control of cooling rate is essential for corrosion resistance - No stress relieving heat treatment permitted above 300°C (570°F) --- #### **7. Corrosion Resistance** CD4MCu offers exceptional corrosion resistance for severe service applications: - **Chloride Stress Corrosion Cracking:** Excellent resistance, superior to 300-series austenitic stainless steels - **Pitting and Crevice Corrosion:** Outstanding resistance with high Pitting Resistance Equivalent Number (PREN > 35) - **General Corrosion:** Excellent resistance to sulfuric, phosphoric, and organic acids - **Erosion-Corrosion:** Superior performance in high-velocity and slurry applications - **Intergranular Corrosion:** Excellent resistance when properly heat treated - **Galvanic Corrosion:** Good compatibility in mixed-material systems --- #### **8. Product Applications** CD4MCu under ASTM A744M is specified for the most demanding corrosive applications across multiple industries. **Primary Applications Include:** - **Chemical Processing Industry:** Reactors, columns, heat exchangers, and mixing vessels - **Oil and Gas Production:** Wellhead components, Christmas trees, valves, and flow control equipment - **Pump Components:** Casings, impellers, and diffusers for corrosive and abrasive services - **Marine and Offshore:** Seawater system components, propeller shafts, and marine hardware - **Pollution Control Equipment:** Scrubbers, absorbers, and wastewater treatment systems - **Pulp and Paper Industry:** Digester, bleaching, and chemical recovery equipment - **Power Generation:** Flue gas desulfurization systems and cooling water components --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Good castability with proper foundry techniques - Pattern shrinkage: 20-25 mm/m - Requires controlled solidification to maintain microstructure - Suitable for complex geometries and varying section sizes **Machining:** - More challenging than austenitic stainless steels - Use rigid setups and positive rake carbide tools - Recommended cutting speeds: 15-25 m/min (50-80 SFM) - High-pressure coolant recommended for optimal tool life **Welding:** - **Weldability:** Good with strict procedure control - Preheating: Generally not required - Interpass temperature: Maximum 150°C (300°F) - Filler metals: Over-alloyed duplex (25Cr-9Ni-3Mo) or nickel-base alloys - Post-weld heat treatment: Not recommended to avoid detrimental phase precipitation --- #### **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 per ASTM A370 - **Non-Destructive Examination:** - Radiographic testing per ASTM E94/E1032 - Liquid penetrant testing per ASTM E165/E1417 - Magnetic particle testing per ASTM E709/E1444 - **Corrosion Testing:** Optional per customer requirements - **Ferrite Content:** Measurement per ASTM A800/A800M (typically 35-55%) - **Microstructure Examination:** Phase balance and absence of detrimental phases - **Certification:** Full traceability with comprehensive test reports and heat treatment records --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CD4MCu under ASTM A744M is designed for severe service applications and requires strict control of 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 A744M standard and work with qualified materials engineers for critical applications. Proper quality control, including microstructure examination and corrosion testing, is essential for ensuring optimal performance in severe service environments. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CD4MCu, ASTM A744M Specification Dimensions Size： Diameter 20-1000 mm Length <4176 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 CD4MCu, ASTM A744M Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Sheet,Plate CD4MCu, ASTM A744M -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Sheet,Plate CD4MCu, ASTM A744M -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Sheet/Plate CD4MCu, ASTM A744M -:- 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 Sheet/Plate 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 647 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