ASTM A533 Low Alloy Steel Capillary, Grade C, Class 2

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

ASTM A533 Low Alloy Steel, Grade C, Class 2 Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A533 Grade C Class 2: High-Nickel Medium-Strength Steel Plate** #### **1. Overview** ASTM A533 Grade C Class 2 is a **high-nickel, medium-strength** quenched and tempered alloy steel plate that combines the exceptional toughness of Grade C chemistry with enhanced strength levels. This class provides an optimal balance for applications requiring both **good strength and superior low-temperature toughness**, particularly in heavy-section nuclear components and cryogenic service vessels where reliability under extreme conditions is critical. #### **2. Chemical Composition** The composition maintains high nickel content with controlled alloying for balanced properties: | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.25 max | | Manganese (Mn) | 1.15 - 1.50 | | Phosphorus (P) | 0.025 max | | Sulfur (S) | 0.025 max | | Silicon (Si) | 0.15 - 0.40 | | Nickel (Ni) | 2.75 - 3.25 | | Molybdenum (Mo) | 0.45 - 0.60 | **Optimized Composition Features:** - **Premium Nickel Content (2.75-3.25%)**: Ensures exceptional fracture toughness - **Enhanced Manganese Range**: Provides necessary hardenability for strength development - **Ultra-Low Impurity Control**: Maximum 0.025% P and S for improved weldability and toughness - **Balanced Molybdenum**: Maintains tempering resistance and strength #### **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 Capability and Property Adjustment:** - Maximum thickness: 14 inches (355 mm) - For thickness 2½-4 inches: Yield strength min 65 ksi (450 MPa) - For thickness 4-6 inches: Yield strength min 60 ksi (415 MPa) - Excellent property consistency in heavy sections **Enhanced Physical Properties:** - **Density:** 0.284 lb/in³ (7,850 kg/m³) - **Modulus of Elasticity:** 29,000 ksi (200 GPa) - **Thermal Conductivity:** 31.0 W/m·K at 100°C - **Specific Heat:** 475 J/kg·K at 100°C #### **4. Product Applications** Grade C Class 2 is specified for demanding applications requiring the optimal strength-toughness combination: **Nuclear Power Systems:** - Heavy-wall reactor pressure vessels - Nuclear primary circuit components - Pressurizer shells and steam generators - Advanced reactor core support structures **Cryogenic and Low-Temperature Service:** - LNG storage tank inner shells - Cryogenic process vessels and heat exchangers - Liquid hydrogen storage systems - Low-temperature chemical reactors **High-Pressure Applications:** - Hydrogen compression and storage vessels - High-pressure synthesis reactors - Critical energy storage systems - Advanced power generation equipment #### **5. International Standards & Equivalents** | Region/Country | Standard | Equivalent Grade | Notes | |----------------|----------|------------------|-------| | **International** | **ISO 9328-2** | 12Ni19 | High-nickel equivalent | | **Europe** | **EN 10028-2** | 12Ni19 | Similar strength-toughness balance | | **Japan** | **JIS G3120** | SOV 5B | Premium nuclear quality grade | | **Germany** | **AD 2000** | 12Ni19 | Pressure vessel standard | **Grade C Class Comparison:** | 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 | | **Elongation** | 18% | 16% | 14% | | **Primary Focus** | Maximum Toughness | Balanced Properties | High Strength | #### **6. Fabrication & Quality Assurance** **Precision Welding Requirements:** - **High-nickel welding consumables** mandatory - **Pre-heat control:** 325-425°F (163-218°C) - **Interpass temperature:** 425-575°F (218-302°C) - **Post-weld heat treatment:** 1100-1150°F (595-620°C) - **Welding procedure specifications** requiring full qualification **Controlled Heat Treatment:** - **Austenitizing:** 1600-1650°F (870-900°C) with strict uniformity - **Quenching:** Controlled cooling rate optimization - **Tempering:** 1150-1250°F (620-675°C) with precise temperature control - **Microstructural verification** through metallographic examination **Enhanced Quality Assurance:** - **Ultrasonic examination:** ASTM A578 Level II or higher - **Comprehensive impact testing:** Multiple temperatures and orientations - **Tensile testing:** Longitudinal, transverse, and Z-direction - **Chemical verification:** Complete traceability with spectroscopic analysis --- **Technical Advantages:** - **Optimal strength-toughness balance** for critical applications - **Excellent resistance to neutron irradiation embrittlement** - **Superior performance in cryogenic environments** - **Reliable properties in heavy sections** **Critical Design Considerations:** - **Fracture mechanics evaluation** essential for design - **Radiation embrittlement monitoring** for nuclear service - **Thermal stress analysis** for low-temperature applications - **Fatigue and fracture assessment** for cyclic loading conditions **Nuclear Quality Requirements:** - **Full compliance** with ASME Section III requirements - **Enhanced NDE** including ultrasonic examination - **Radiation surveillance programs** for life extension - **Comprehensive documentation** and traceability **Disclaimer:** This technical information is provided for reference purposes. For nuclear and cryogenic applications, strict adherence to the latest ASTM A533 specification and applicable codes (ASME Section III, Section VIII Division 2) is mandatory. All material selection, fabrication, and testing must be supervised by qualified engineers and comply with relevant regulatory requirements. -:- For detailed product information, please contact sales. -: ASTM A533 Low Alloy Steel, Grade C, Class 2 Specification Dimensions Size： Diameter 20-1000 mm Length <4430 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 C, Class 2 Properties -:- For detailed product information, please contact sales. -:

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

Packing of ASTM A533 Low Alloy Steel Capillary, Grade C, 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 Capillary 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 901 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