ASTM A533 Low Alloy Steel Rod/Bar, Grade D, Class 2

ASTM A533 Low Alloy Steel Rod, Grade D, Class 2 Product Information -:- For detailed product information, please contact sales. -: ASTM A533 Low Alloy Steel Rod, Grade D, Class 2 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A533 Low Alloy Steel, Grade D, Class 2 Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A533 Grade D Class 2: Advanced Manganese-Nickel-Molybdenum Alloy Steel Plate** #### **1. Overview** ASTM A533 Grade D Class 2 is a **high-performance manganese-nickel-molybdenum alloy steel plate** that represents the intermediate strength grade within the Grade D classification. This material is specifically engineered to provide an **optimal balance of enhanced strength and maintained toughness**, making it particularly suitable for modern pressure vessel applications where both mechanical strength and fracture resistance are critical design considerations. #### **2. Chemical Composition** Grade D Class 2 maintains the optimized chemistry of Grade D with precise control for consistent performance: | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.20 max | | Manganese (Mn) | 1.20 - 1.60 | | Phosphorus (P) | 0.025 max | | Sulfur (S) | 0.025 max | | Silicon (Si) | 0.15 - 0.40 | | Nickel (Ni) | 0.70 - 1.00 | | Molybdenum (Mo) | 0.45 - 0.60 | | Copper (Cu) | 0.25 max | **Advanced Metallurgical Design:** - **Carbon Optimization (0.20% max)**: Ideal balance between strength attainment and weldability preservation - **Enhanced Manganese (1.20-1.60%)**: Provides superior hardenability for consistent through-thickness properties - **Nickel-Molybdenum Synergy**: Delivers excellent toughness at elevated strength levels - **Premium Purity Standards**: 0.025% maximum impurities ensure exceptional fracture resistance #### **3. Physical & Mechanical Properties** **Mechanical Properties (Up to 2½ inches / 63 mm thickness):** | Property | Requirement | |----------|-------------| | **Tensile Strength** | 90 - 110 ksi (620 - 760 MPa) | | **Yield Strength** | 70 ksi min (485 MPa min) | | **Elongation in 2 inches** | 16% min | | **Reduction of Area** | 40% min | | **Charpy V-Notch Impact** | 40 ft-lb min at -75°F (-60°C) | **Thickness Performance Capability:** - **Maximum thickness**: 14 inches (355 mm) - **Thickness 2½-4 inches**: Yield strength minimum 65 ksi (450 MPa) - **Thickness 4-6 inches**: Yield strength minimum 60 ksi (415 MPa) - **Excellent property retention** in heavy sections **Advanced Physical Characteristics:** - **Density**: 0.284 lb/in³ (7,850 kg/m³) - **Modulus of Elasticity**: 29,000 ksi (200 GPa) - **Thermal Expansion Coefficient**: 6.3 × 10⁻⁶/°F (11.3 × 10⁻⁶/°C) - **Thermal Conductivity**: 33.0 W/m·K at 100°C #### **4. Product Applications** Grade D Class 2 is specified for advanced applications requiring the optimal strength-toughness combination: **Nuclear Power Advancements:** - Intermediate thickness reactor pressure vessels - Nuclear primary circuit components - Steam generator shells and heads - Advanced nuclear service components **High-Pressure Technology:** - Modern chemical process reactors - High-pressure gas storage systems - Advanced heat exchanger applications - Critical energy industry components **Specialized Applications:** - Heavy-wall pressure containers - Advanced power generation equipment - Special industrial machinery components - Research and development vessels #### **5. International Standards & Equivalents** | Region/Country | Standard | Equivalent Grade | Notes | |----------------|----------|------------------|-------| | **International** | **ISO 9328-2** | 15MnNi63 | Similar manganese-nickel balance | | **Europe** | **EN 10028-2** | 15MnNi63 | Comparable mechanical properties | | **Japan** | **JIS G3120** | SOV 6B | Advanced nuclear quality equivalent | | **Germany** | **DIN 17155** | 15MnNi63 | Historical premium designation | **Grade D Class Performance Spectrum:** | Property | Class 1 | Class 2 | Class 3 | |----------|---------|---------|---------| | **Yield Strength** | 50 ksi | 70 ksi | 85 ksi | | **Tensile Strength** | 80-100 ksi | 90-110 ksi | 100-115 ksi | | **Application Focus** | Maximum Toughness | Balanced Performance | High Strength | #### **6. Fabrication & Quality Excellence** **Precision Welding Technology:** - **Enhanced weldability characteristics** due to optimized carbon equivalent - **Pre-heat requirements**: 325-425°F (163-218°C) - **Interpass temperature control**: 425-575°F (218-302°C) - **Post-weld heat treatment**: 1100-1150°F (595-620°C) - **Advanced welding procedures**: Qualified for nuclear applications **Advanced Heat Treatment Protocol:** - **Computer-controlled austenitizing**: 1600-1650°F (870-900°C) - **Optimized quenching technology**: Precise cooling rate management - **Multiple-stage tempering**: 1150-1250°F (620-675°C) for property optimization - **Real-time process monitoring**: Full digital recording and verification **Comprehensive Quality Assurance:** - **Advanced ultrasonic examination**: Phased array technology implementation - **Mechanical testing protocol**: Longitudinal, transverse, and through-thickness - **Chemical analysis verification**: Advanced spectroscopic techniques - **Complete digital documentation**: Blockchain-enabled traceability systems --- **Technical Advantages:** - **Superior strength-toughness balance** for modern design requirements - **Enhanced performance consistency** across heavy sections - **Excellent weldability characteristics** for complex fabrications - **Proven reliability** in advanced nuclear applications **Engineering Excellence Requirements:** - **Modern fracture mechanics analysis** employing advanced methodologies - **Comprehensive thermal-mechanical analysis** for pressure vessel design - **Advanced fatigue assessment** for cyclic service conditions - **State-of-the-art non-destructive evaluation** implementation **Nuclear Quality Standards:** - **Full compliance** with ASME Section III requirements - **Enhanced quality assurance** protocols - **Comprehensive documentation** and traceability systems - **Advanced manufacturing process control** **Disclaimer:** This technical information represents the current understanding of ASTM A533 Grade D Class 2 capabilities. For nuclear and other critical applications, absolute adherence to the latest ASTM specifications and applicable codes (ASME Section III) is mandatory. All material selection, fabrication, and testing activities must be directed by qualified engineers and subject to appropriate regulatory oversight. -:- For detailed product information, please contact sales. -: ASTM A533 Low Alloy Steel, Grade D, Class 2 Specification Dimensions Size： Diameter 20-1000 mm Length <4433 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. -: ASTM A533 Low Alloy Steel, Grade D, Class 2 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A533 Low Alloy Steel Rod, Grade D, Class 2 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A533 Low Alloy Steel Rod, Grade D, Class 2 -:- For detailed product information, please contact sales. -:

Packing of ASTM A533 Low Alloy Steel Rod, Grade D, Class 2 -:- 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 904 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