ASTM A533 Low Alloy Steel Rod/Bar, Grade C, Class 1

ASTM A533 Low Alloy Steel Rod, Grade C, Class 1 Product Information -:- For detailed product information, please contact sales. -: ASTM A533 Low Alloy Steel Rod, Grade C, Class 1 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A533 Low Alloy Steel, Grade C, Class 1 Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A533 Grade C Class 1: High-Nickel Quenched and Tempered Alloy Steel Plate** #### **1. Overview** ASTM A533 Grade C Class 1 is a **high-nickel alloy steel plate** within the ASTM A533 specification, designed to provide **exceptional low-temperature toughness** for critical applications. With the highest nickel content among all ASTM A533 grades, this material delivers superior performance in cryogenic and nuclear service conditions where fracture resistance at extremely low temperatures is paramount. #### **2. Chemical Composition** Grade C features significantly higher nickel content for maximum toughness: | 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 | **Premium Composition Features:** - **Very High Nickel (2.75-3.25%)**: Provides exceptional low-temperature toughness down to cryogenic temperatures - **Enhanced Manganese (1.15-1.50%)**: Ensures adequate hardenability despite high nickel content - **Ultra-Low Impurities**: Maximum 0.025% P and S for improved purity and fracture resistance - **Balanced Molybdenum**: Maintains strength and tempering resistance #### **3. Physical & Mechanical Properties** **Mechanical Properties (Up to 2½ inches / 63 mm thickness):** | Property | Requirement | |----------|-------------| | **Tensile Strength** | 80 - 100 ksi (550 - 690 MPa) | | **Yield Strength** | 50 ksi min (345 MPa min) | | **Elongation in 2 inches** | 18% min | | **Reduction of Area** | 45% min | | **Charpy V-Notch Impact** | 40 ft-lb min at -75°F (-60°C) | **Enhanced Toughness Performance:** - **Exceptional CVN values** typically exceeding minimum requirements - **Excellent ductile-to-brittle transition** behavior - **Superior fracture toughness** (K_Ic) at cryogenic temperatures - **Consistent properties** through heavy sections **Physical Properties (Typical):** - **Density:** 0.284 lb/in³ (7,850 kg/m³) - **Modulus of Elasticity:** 29,000 ksi (200 GPa) - **Thermal Expansion Coefficient:** 6.1 × 10⁻⁶/°F (11.0 × 10⁻⁶/°C) - **Poisson's Ratio:** 0.29 #### **4. Product Applications** Grade C Class 1 is specified for the most demanding low-temperature and nuclear applications: **Cryogenic Service:** - LNG storage tank inner containers - Liquid nitrogen and oxygen vessels - Cryogenic process equipment - Superconducting magnet structures **Nuclear Power Systems:** - Advanced reactor pressure vessels - Nuclear containment systems - Reactor internals support structures - Safety-related components **Special Applications:** - Arctic offshore structures - High-pressure hydrogen storage - Research facility components - Aerospace ground support equipment #### **5. International Standards & Equivalents** | Region/Country | Standard | Equivalent Grade | Notes | |----------------|----------|------------------|-------| | **International** | **ISO 9328-2** | 12Ni14 | Lower nickel equivalent | | **Europe** | **EN 10028-2** | 12Ni14 | Similar application scope | | **Japan** | **JIS G3120** | SOV 5A | High-nickel nuclear grade | | **Germany** | **DIN 17155** | 12Ni14 | Historical designation | **Grade Comparison - Nickel Content:** | Grade | Nickel Content | Primary Application | |-------|----------------|---------------------| | **Grade A** | 0.70-1.00% | General pressure vessels | | **Grade B** | 2.00-2.50% | Enhanced toughness | | **Grade C** | 2.75-3.25% | Maximum toughness | #### **6. Fabrication & Quality Assurance** **Specialized Welding Requirements:** - **Matching high-nickel electrodes** required - **Pre-heat:** 300-400°F (150-200°C) - **Interpass temperature:** 400-600°F (200-315°C) - **Post-weld heat treatment:** 1100-1150°F (595-620°C) - **Welding procedure qualification** essential **Advanced Heat Treatment:** - **Austenitizing:** 1600-1650°F (870-900°C) - **Quenching:** Precise cooling rate control - **Tempering:** 1150-1250°F (620-675°C) - **Microstructural control:** Essential for optimal properties **Comprehensive Quality Control:** - **Ultrasonic examination:** ASTM A578 Level II minimum - **Impact testing:** Multiple temperatures including service conditions - **Tensile testing:** Longitudinal and transverse directions - **Chemical analysis:** Complete traceability with product verification --- **Key Technical Advantages:** - **Unmatched low-temperature toughness** - **Excellent resistance to neutron irradiation embrittlement** - **Superior fracture mechanics properties** - **Reliable performance in extreme environments** **Design and Application Considerations:** - **Fracture mechanics analysis** mandatory for critical applications - **Radiation damage monitoring** for nuclear service - **Thermal stress analysis** for cryogenic applications - **Fatigue crack growth evaluation** for cyclic service **Disclaimer:** This information is for technical reference only. For cryogenic and nuclear applications, consult the latest ASTM A533 specification and applicable codes (ASME Section III, Section VIII). All material selection and fabrication must be approved by qualified engineers and comply with relevant regulatory requirements. -:- For detailed product information, please contact sales. -: ASTM A533 Low Alloy Steel, Grade C, Class 1 Specification Dimensions Size： Diameter 20-1000 mm Length <4429 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 1 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A533 Low Alloy Steel Rod, Grade C, Class 1 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A533 Low Alloy Steel Rod, Grade C, Class 1 -:- For detailed product information, please contact sales. -:

Packing of ASTM A533 Low Alloy Steel Rod, Grade C, Class 1 -:- 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 900 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