Cast Stainless Steel Rod/Bar CPH20, ASTM A451

Cast Stainless Steel Rod CPH20, ASTM A451 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Rod CPH20, ASTM A451 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CPH20, ASTM A451 Product Information -:- For detailed product information, please contact sales. -: ### **Technical Datasheet: Cast Stainless Steel CPH20 (ASTM A451)** #### **1. Product Overview** Cast Stainless Steel CPH20 under ASTM A451 specification is a centrifugally cast austenitic stainless steel pipe specifically designed for high-temperature pressure applications. This heat-resistant alloy offers exceptional performance in elevated temperature service conditions, combining excellent oxidation resistance with good creep strength. The centrifugal casting process provides superior metallurgical structure and mechanical properties, making it particularly suitable for pressure-containing components in high-temperature environments. **Key Advantages:** - **Superior High-Temperature Strength:** Excellent mechanical properties maintained at elevated temperatures - **Enhanced Oxidation Resistance:** Outstanding performance in oxidizing atmospheres up to 1150°C (2100°F) - **Excellent Creep Resistance:** Superior performance under sustained loading at high temperatures - **Homogeneous Structure:** Centrifugal casting ensures consistent properties throughout wall thickness - **Pressure-Containing Capability:** Designed for high-temperature pressure applications --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A451/A451M:** Standard Specification for Centrifugally Cast Austenitic Steel Pipe for High-Temperature Service Additional applicable standards: - **UNS J93045:** Unified Numbering System designation - **ASME SA451:** ASME Boiler and Pressure Vessel Code equivalent - **ASTM A608/A608M:** Specification for Centrifugally Cast Iron-Chromium-Nickel High-Alloy Tubing - **ISO 11972:** Corrosion-resistant cast steels for general applications --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is optimized for high-temperature performance in centrifugally cast products. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.20 max | | Manganese (Mn) | 1.50 max | | Silicon (Si) | 1.75 max | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.04 | | Chromium (Cr) | 23.0-27.0 | | Nickel (Ni) | 12.0-15.0 | | Iron (Fe) | Balance | *Note: The composition is balanced to provide optimal high-temperature strength and oxidation resistance for centrifugally cast pipe applications.* --- #### **4. Mechanical Properties** Mechanical properties meet ASTM A451 requirements for centrifugally cast high-temperature pipe. **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):** 25.0% min **Elevated Temperature Properties (Typical):** - **At 815°C (1500°F):** Tensile Strength: 110-140 MPa (16-20 ksi) - **At 980°C (1800°F):** Tensile Strength: 70-90 MPa (10-13 ksi) - **Creep Strength:** Excellent long-term performance - **Stress Rupture:** Maintains integrity under sustained loading --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity:** 195 GPa (28,300 ksi) at 21°C - **Poisson's Ratio:** 0.28 - **Thermal Conductivity:** 14.5 W/m·K (at 100°C) - **Specific Heat Capacity:** 500 J/kg·K (at 0-100°C) - **Coefficient of Thermal Expansion:** 16.0 × 10⁻⁶/°C (20-100°C) - **Electrical Resistivity:** 0.85 μΩ·m - **Magnetic Permeability:** Essentially non-magnetic --- #### **6. Heat Treatment** **Solution Annealing Treatment:** - **Temperature Range:** 1120-1170°C (2050-2140°F) - **Soak Time:** Appropriate for wall thickness, minimum 1 hour - **Cooling Method:** Rapid cool suitable for pipe configuration - **Objective:** To achieve complete solutionizing and optimal high-temperature properties **Stress Relieving (Optional):** - **Temperature:** 870-925°C (1600-1700°F) - **Purpose:** To relieve residual stresses from casting and fabrication --- #### **7. High-Temperature Performance** CPH20 demonstrates exceptional performance in high-temperature pipe applications: - **Oxidation Resistance:** Excellent scaling resistance up to 1150°C (2100°F) - **Creep Strength:** Superior resistance to deformation under prolonged stress - **Thermal Fatigue:** Excellent performance under thermal cycling conditions - **Carburization Resistance:** Good resistance in carburizing atmospheres - **Structural Stability:** Maintains microstructural integrity during long-term service - **Pressure Containment:** Reliable performance under combined thermal and pressure stresses --- #### **8. Product Applications** CPH20 centrifugally cast stainless steel is extensively used in high-temperature pressure applications: **Power Generation Industry:** - Superheater and reheater tubes - Steam headers and piping - Boiler pressure parts - High-temperature heat exchangers **Petrochemical Industry:** - Reform furnace tubes - Pyrolysis furnace coils - Heater tubes and components - Catalytic reactor tubing **Heat Processing Industry:** - Radiant tubes - Heat treatment furnace components - Annealing furnace parts - Thermal processing equipment **Other Applications:** - Waste heat recovery systems - Incinerator components - High-temperature process piping - Thermal oxidizer systems --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Specifically designed for centrifugal casting process - Excellent fluidity and casting characteristics - Produces dense, homogeneous wall structure - Suitable for various pipe diameters and wall thicknesses **Machining:** - Moderate machinability in annealed condition - Work hardens during machining operations - Use carbide tools with positive rake geometry - Recommended cutting speeds: 15-25 m/min (50-80 SFM) **Welding:** - **Weldability:** Good with proper procedures - **Preheating:** 150-200°C (300-400°F) recommended - **Interpass Temperature:** 200-250°C (400-480°F) - **Filler Metals:** ENiCrFe-3 or equivalent nickel-base alloys - **Post-weld Heat Treatment:** Stress relief annealing recommended --- #### **10. Quality Assurance & Testing** - **Chemical Analysis:** Per ASTM A751 requirements - **Mechanical Testing:** Tensile tests per ASTM A370 - **Hardness Testing:** Multiple location verification - **Non-Destructive Testing:** - Radiographic examination per ASTM E94 - Liquid penetrant examination per ASTM E165 - Ultrasonic examination for wall thickness verification - **High-Temperature Testing:** - Creep and stress rupture testing - Oxidation resistance evaluation - **Hydrostatic Testing:** Required per specification requirements - **Dimensional Inspection:** Comprehensive dimensional verification - **Certification:** Full traceability with comprehensive mill test certificates --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CPH20 stainless steel under ASTM A451 is specifically designed for centrifugally cast high-temperature pressure applications and requires careful consideration of service conditions. Always consult the complete ASTM A451 standard and work with qualified materials engineers for critical applications. The material's performance may be affected by specific operating conditions, and proper design considerations for thermal expansion, creep, and pressure containment are essential for successful long-term performance in elevated temperature service. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CPH20, ASTM A451 Specification Dimensions Size： Diameter 20-1000 mm Length <4202 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 CPH20, ASTM A451 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Rod CPH20, ASTM A451 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Rod CPH20, ASTM A451 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Rod CPH20, ASTM A451 -:- 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 673 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