Cast Stainless Steel Wire HC30, ASTM A608

Cast Stainless Steel Wire HC30, ASTM A608 Product Information -:- For detailed product information, please contact sales. -: Cast Stainless Steel Wire HC30, ASTM A608 Synonyms -:- For detailed product information, please contact sales. -:

Cast Stainless Steel HC30, ASTM A608 Product Information -:- For detailed product information, please contact sales. -: ### **Technical Datasheet: Cast Stainless Steel HC30 (ASTM A608)** #### **1. Product Overview** Cast Stainless Steel HC30 under ASTM A608 specification is a high-chromium centrifugally cast heat-resistant alloy designed for extreme high-temperature applications. This premium alloy offers exceptional oxidation resistance, superior creep strength, and excellent microstructural stability at temperatures up to 1200°C (2190°F). The centrifugal casting process ensures optimal metallurgical properties and dimensional consistency, making it particularly suitable for demanding high-temperature pressure applications. **Key Advantages:** - **Exceptional High-Temperature Strength:** Maintains mechanical integrity under extreme thermal conditions - **Superior Oxidation Resistance:** Outstanding performance in oxidizing atmospheres up to 1200°C - **Excellent Creep Resistance:** Superior long-term performance under sustained loading - **Enhanced Microstructural Stability:** Resists phase transformation and embrittlement - **Optimized for Centrifugal Casting:** Specifically designed for tubular high-temperature components --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A608/A608M:** Standard Specification for Centrifugally Cast Iron-Chromium-Nickel High-Alloy Tubing for Pressure Application at High Temperatures Additional applicable standards: - **UNS J92603:** Unified Numbering System designation - **ASME SA608:** ASME Boiler and Pressure Vessel Code equivalent - **ASTM A297/A297M:** Standard for Heat-Resistant Steel Castings - **ISO 11972:** Corrosion-resistant cast steels for general applications --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is precisely balanced for optimal high-temperature performance in centrifugal casting. | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.35-0.45 | | Manganese (Mn) | 1.50 max | | Silicon (Si) | 1.75 max | | Phosphorus (P), max | 0.04 | | Sulfur (S), max | 0.04 | | Chromium (Cr) | 26.0-30.0 | | Nickel (Ni) | 10.0-14.0 | | Iron (Fe) | Balance | *Note: The high chromium content provides superior oxidation resistance, while the balanced carbon and nickel ensure optimal high-temperature strength and microstructural stability.* --- #### **4. Mechanical Properties** Mechanical properties meet ASTM A608 requirements for high-temperature pressure tubing. **Minimum Required Values (Heat-Treated Condition):** - **Tensile Strength:** 485 MPa (70 ksi) min - **Yield Strength (0.2% Offset):** 275 MPa (40 ksi) min - **Elongation in 2" (50 mm):** 10.0% min **Elevated Temperature Properties (Typical):** - **At 870°C (1600°F):** Tensile Strength: 140-170 MPa (20-25 ksi) - **At 980°C (1800°F):** Tensile Strength: 90-120 MPa (13-17 ksi) - **Creep Strength:** Exceptional performance up to 1150°C (2100°F) - **Stress Rupture:** Superior resistance under sustained loading --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.80 g/cm³ (0.282 lb/in³) - **Modulus of Elasticity:** 200 GPa (29,000 ksi) at 21°C - **Poisson's Ratio:** 0.28 - **Thermal Conductivity:** 13.5 W/m·K (at 100°C) - **Specific Heat Capacity:** 520 J/kg·K (at 0-100°C) - **Coefficient of Thermal Expansion:** 15.2 × 10⁻⁶/°C (20-100°C) - **Electrical Resistivity:** 0.95 μΩ·m - **Magnetic Permeability:** Essentially non-magnetic --- #### **6. Heat Treatment** **Solution Annealing Treatment:** - **Temperature Range:** 1150-1200°C (2100-2190°F) - **Soak Time:** Appropriate for wall thickness, minimum 1 hour - **Cooling Method:** Rapid cool suitable for tubular configuration - **Objective:** To achieve complete solutionizing and optimal high-temperature properties **Stabilization Treatment (Recommended):** - **Temperature:** 900-950°C (1650-1740°F) - **Soak Time:** 2-4 hours - **Purpose:** To enhance microstructural stability for long-term service --- #### **7. High-Temperature Performance** HC30 demonstrates exceptional performance in severe high-temperature environments: - **Oxidation Resistance:** Outstanding scaling resistance up to 1200°C (2190°F) - **Carburization Resistance:** Excellent performance in carburizing atmospheres - **Sulfidation Resistance:** Good resistance to sulfur-containing environments - **Thermal Fatigue:** Exceptional resistance to thermal cycling and shock - **Creep Rupture:** Superior long-term performance under stress - **Microstructural Stability:** Excellent resistance to sigma phase formation --- #### **8. Product Applications** HC30 centrifugally cast stainless steel is extensively used in the most demanding high-temperature applications: **Ethylene Production:** - Cracking furnace tubes - Transfer line exchangers - Pyrolysis furnace components - Quench system tubing **Petrochemical Industry:** - Reform furnace tubes - Heater tubes and coils - Steam methane reformer components - High-temperature reactors **Power Generation:** - Superheater tubes - Reheater components - High-temperature headers - Boiler pressure parts **Heat Processing Industry:** - Radiant tubes - Heat treatment furnace components - Annealing retorts - Thermal processing equipment --- #### **9. Fabrication & Welding Characteristics** **Casting Characteristics:** - Specifically optimized for centrifugal casting process - Excellent fluidity and casting characteristics - Produces dense, homogeneous wall structure - Suitable for various 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: 10-20 m/min (35-65 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 high-temperature alloys - **Post-weld Heat Treatment:** Full solution 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 per ASTM G54 - **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. HC30 stainless steel under ASTM A608 is specifically designed for centrifugally cast high-temperature pressure applications and requires careful consideration of service conditions. Always consult the complete ASTM A608 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 HC30, ASTM A608 Specification Dimensions Size： Diameter 20-1000 mm Length <4211 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 HC30, ASTM A608 Properties -:- For detailed product information, please contact sales. -:

Applications of Cast Stainless Steel Wire HC30, ASTM A608 -:- For detailed product information, please contact sales. -: Chemical Identifiers Cast Stainless Steel Wire HC30, ASTM A608 -:- For detailed product information, please contact sales. -:

Packing of Cast Stainless Steel Wire HC30, ASTM A608 -:- 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 Wire 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 682 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