Cast Stainless Steel CA40, ASTM A743

Cast Stainless Steel CA40, ASTM A743 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel CA40, ASTM A743 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel CA40, ASTM A743 Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: Cast Stainless Steel CA40, ASTM A743** #### **1. Product Overview** Cast Stainless Steel CA40 is a martensitic chromium stainless steel conforming to ASTM A743 specification, designed for applications requiring good corrosion resistance combined with higher strength and hardness. As a higher carbon variant of the CA-series stainless steels, CA40 provides enhanced mechanical properties while maintaining adequate corrosion resistance for general corrosive environments. This grade is particularly suitable for applications where wear resistance and mechanical strength are prioritized. **Key Advantages:** - **Higher Strength & Hardness:** Superior mechanical properties compared to lower carbon grades - **Good Wear Resistance:** Excellent performance in abrasive environments - **Adequate Corrosion Resistance:** Suitable for mildly corrosive conditions - **Heat Treatable:** Responsive to various heat treatment processes - **Cost-Effective:** Economical solution for demanding applications --- #### **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 J91151:** Unified Numbering System designation - **ASME SA743:** 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 balanced to achieve optimal mechanical properties and corrosion resistance. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.20-0.40 | | Manganese (Mn) | 1.00 max | | Silicon (Si) | 1.50 max | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.04 | | Chromium (Cr) | 11.5-14.0 | | Nickel (Ni) | 1.00 max | | Molybdenum (Mo) | 0.50 max | *Note: The higher carbon content provides increased hardenability and mechanical strength.* --- #### **4. Mechanical Properties** Mechanical properties are typically determined in the heat-treated condition. **Minimum Required Values (Heat-Treated Condition):** - **Tensile Strength:** 690 MPa (100 ksi) - **Yield Strength (0.2% Offset):** 485 MPa (70 ksi) - **Elongation in 2" (50 mm):** 15% - **Reduction of Area:** 30% **Typical Achievable Properties:** - **Tensile Strength:** 760-1035 MPa (110-150 ksi) - **Yield Strength (0.2% Offset):** 550-860 MPa (80-125 ksi) - **Elongation:** 15-20% in 2" (50 mm) - **Hardness:** 220-290 HBW (heat-treated) - **Impact Energy:** 20 J (15 ft-lb) min at room temperature --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.70 g/cm³ (0.278 lb/in³) - **Modulus of Elasticity:** 200 GPa (29,000 ksi) - **Poisson's Ratio:** 0.27-0.30 - **Thermal Conductivity:** 24.5 W/m·K (at 100°C) - **Specific Heat Capacity:** 460 J/kg·K (at 0-100°C) - **Coefficient of Thermal Expansion:** 10.3 × 10⁻⁶/°C (20-100°C) - **Magnetic Permeability:** Magnetic in all conditions --- #### **6. Heat Treatment** **Standard Heat Treatment Sequence:** **Annealing:** - Temperature: 840-900°C (1550-1650°F) - Soak time: 1-2 hours per inch of thickness - Cooling: Furnace cool to 480°C (900°F), then air cool **Hardening:** - Austenitizing: 980-1065°C (1800-1950°F) - Quenching: Oil or air quench depending on section size **Tempering:** - Temperature range: 205-370°C (400-700°F) for high hardness - Temperature range: 540-760°C (1000-1400°F) for high toughness - Soak time: 2 hours per inch of thickness minimum --- #### **7. Corrosion Resistance** - **Atmospheric:** Good resistance to rural and urban atmospheres - **Fresh Water:** Adequate performance in fresh water and steam systems - **Chemical:** Moderate resistance to mild chemicals and organic compounds - **Oxidation Resistance:** Suitable for service up to 815°C (1500°F) - **Limitations:** Not recommended for severe corrosive environments or high chloride applications --- #### **8. Product Applications** CA40 cast stainless steel is widely used in applications requiring high strength, hardness, and moderate corrosion resistance. **Primary Applications Include:** - **Mining & Mineral Processing:** Pump components, slurry pump parts, and wear plates - **Valve Components:** Valve trim, seats, stems, and high-wear parts - **Pump Parts:** Impellers, casings, and wear rings for abrasive services - **Food Processing Equipment:** Cutters, mixing elements, and processing components - **Chemical Processing:** Mixer blades, agitators, and processing equipment - **General Engineering:** Gears, bushings, and high-strength structural components --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Good castability with proper foundry practices - Pattern shrinkage: 20-25 mm/m - Moderate fluidity - Requires careful cooling to avoid cracking **Machining:** - Best machined in annealed condition - Use rigid setups and positive rake tools - Recommended cutting speeds: 15-25 m/min (50-80 SFM) - Adequate cooling essential **Welding:** - **Weldability:** Fair (requires strict procedures) - Preheating: 300-400°C (570-750°F) - Interpass temperature: 300-350°C (570-660°F) - Post-weld heat treatment: Essential - Recommended electrodes: E410 or E410NiMo --- #### **10. Quality Assurance & Testing** - **Chemical Analysis:** Per ASTM A751 requirements - **Mechanical Testing:** Tensile tests per ASTM A370 - **Hardness Testing:** Brinell or Rockwell methods - **Non-Destructive Testing:** Radiographic, magnetic particle, or liquid penetrant examination available - **Heat Treatment Certification:** Complete documentation of thermal cycles - **Quality Grades:** Available as specified in ASTM A743 - **Certification:** Full traceability with mill test certificates --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. CA40 stainless steel offers higher strength and hardness but with reduced weldability and impact toughness compared to lower carbon grades. The properties and performance characteristics may vary based on specific heat treatment, casting parameters, and service conditions. Always consult the complete ASTM A743 standard and qualified materials engineers for critical applications. Proper heat treatment and quality control are essential to achieve the desired mechanical properties and corrosion resistance. -:- For detailed product information, please contact sales. -: Cast Stainless Steel CA40, ASTM A743 Specification Dimensions Size： Diameter 20-1000 mm Length <4167 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 CA40, ASTM A743 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel CA40, ASTM A743 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel CA40, ASTM A743 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel CA40, 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 638 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