Cast Stainless Steel CH10, ASTM A743

Cast Stainless Steel CH10, ASTM A743 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel CH10, ASTM A743 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CH10, ASTM A743 Product Information -:- For detailed product information, please contact sales. -: ### **Technical Datasheet: Cast Stainless Steel CH10 (ASTM A743)** #### **1. Product Overview** Cast Stainless Steel CH10 under ASTM A743 specification is a heat-resistant austenitic stainless steel designed for elevated temperature applications. This high-chromium, high-nickel alloy offers exceptional oxidation resistance and maintains excellent mechanical properties at temperatures up to 1150°C (2100°F). CH10 is particularly suitable for applications involving thermal cycling, corrosive atmospheres, and prolonged exposure to high temperatures, making it a preferred choice for furnace components and heat processing equipment. **Key Advantages:** - **Exceptional High-Temperature Strength:** Maintains mechanical integrity under prolonged high-temperature exposure - **Superior Oxidation Resistance:** Excellent scaling resistance in oxidizing atmospheres up to 1150°C - **Excellent Thermal Fatigue Resistance:** Withstands repeated thermal cycling without degradation - **Good Corrosion Resistance:** Suitable for various corrosive environments - **Microstructural Stability:** Resists embrittlement phases formation during long-term high-temperature service --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A743/A743M:** Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, and Nickel-Base Corrosion-Resistant Alloys for General Application Additional applicable standards: - **UNS J93090:** Unified Numbering System designation - **ASME SA743:** ASME Boiler and Pressure Vessel Code equivalent - **ASTM A297/A297M:** Standard Specification for Steel Castings, Iron-Chromium, Iron-Chromium-Nickel, Heat-Resistant - **ISO 11972:** Corrosion-resistant cast steels for general applications --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is optimized for high-temperature performance and oxidation resistance. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.06-0.14 | | Manganese (Mn) | 2.00 max | | Silicon (Si) | 0.75-1.50 | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.04 | | Chromium (Cr) | 22.0-26.0 | | Nickel (Ni) | 12.0-15.0 | | Iron (Fe) | Balance | *Note: The high chromium content provides superior oxidation resistance, while nickel ensures austenitic structure stability at elevated temperatures.* --- #### **4. Mechanical Properties** Mechanical properties are determined in the heat-treated condition as required by ASTM A743. **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 980°C/1800°F):** - **Tensile Strength:** 65-85 MPa (9.4-12.3 ksi) - **Creep Strength:** Maintains excellent long-term performance - **Stress Rupture Strength:** Good resistance under sustained loading --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.90 g/cm³ (0.285 lb/in³) - **Modulus of Elasticity:** 195 GPa (28,300 ksi) at 21°C (70°F) - **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:** 1-2 hours per inch of thickness, minimum 1 hour - **Cooling Method:** Rapid water quench or air cool - **Objective:** To achieve complete solutionizing and homogeneous austenitic structure **Stress Relieving (Optional):** - **Temperature:** 870-925°C (1600-1700°F) - **Soak Time:** 1-2 hours per inch of thickness - **Purpose:** To relieve residual stresses from casting and fabrication --- #### **7. High-Temperature Performance** CH10 offers exceptional performance in demanding high-temperature applications: - **Oxidation Resistance:** Excellent resistance to scaling up to 1150°C (2100°F) - **Creep Strength:** Maintains structural integrity under prolonged stress at high temperatures - **Thermal Fatigue Resistance:** Excellent performance under repeated thermal cycling - **Carburization Resistance:** Good resistance in carburizing atmospheres - **Sulfidation Resistance:** Moderate performance in sulfur-containing environments - **Microstructural Stability:** Resists sigma phase formation during long-term exposure --- #### **8. Product Applications** CH10 cast stainless steel is extensively used in high-temperature applications across various industries: **Heat Treatment Industry:** - Furnace radiant tubes and retorts - Heat treatment fixtures and baskets - Annealing covers and inner covers - Carburizing and nitriding equipment components **Power Generation:** - Boiler components and supports - Heat exchanger parts - Burner nozzles and components - High-temperature ducting systems **Petrochemical Industry:** - Reform furnace tubes and components - Pyrolysis furnace parts - Catalytic reactor internals - High-temperature process piping **Other High-Temperature Applications:** - Ceramic kiln furniture and components - Glass manufacturing equipment - Incinerator parts and components - Aerospace heat treatment fixtures --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Good castability with proper foundry practices - Pattern shrinkage: 25-30 mm/m - Requires adequate feeding for sound castings - Suitable for complex high-temperature components **Machining:** - Moderate machinability in annealed condition - Work hardens during machining operations - Use carbide tools with positive rake angles - 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 - **High-Temperature Testing:** - Oxidation testing per ASTM G54 - Creep and stress rupture testing available - **Metallographic Examination:** Microstructure evaluation - **Certification:** Full traceability with comprehensive mill test certificates --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CH10 stainless steel under ASTM A743 is specifically designed for high-temperature applications and requires careful consideration of service conditions, including temperature profiles, atmospheric conditions, and mechanical stresses. Always consult the complete ASTM A743 standard and work with qualified materials engineers for critical high-temperature applications. The material's performance may be significantly affected by specific operating conditions, and proper design considerations for thermal expansion, creep, and atmospheric compatibility are essential for successful long-term performance in elevated temperature service. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CH10, ASTM A743 Specification Dimensions Size： Diameter 20-1000 mm Length <4196 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 CH10, ASTM A743 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel CH10, ASTM A743 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel CH10, ASTM A743 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel CH10, ASTM A743 -:- 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 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 667 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