ASTM A543 Steel Capillary, Grade B

ASTM A543 Steel Capillary, Grade B Product Information -:- For detailed product information, please contact sales. -: ASTM A543 Steel Capillary, Grade B Synonyms -:- For detailed product information, please contact sales. -:

ASTM A543 Steel, Grade B Product Information -:- For detailed product information, please contact sales. -: ### **ASTM A543 Grade B: Nickel-Chromium-Molybdenum Alloy Steel Plate** #### **1. Overview** ASTM A543 Grade B is a **nickel-chromium-molybdenum alloy steel plate** supplied in the **quenched and tempered condition**. This specification covers high-strength steel plates primarily used for **pressure vessels and other critical applications** where enhanced notch toughness is required, particularly in low-temperature service conditions. The unique combination of nickel, chromium, and molybdenum provides an excellent balance of strength, toughness, and hardenability. #### **2. Chemical Composition** The chemical composition is carefully balanced for optimal performance: | Element | Composition (%) | |---------|-----------------| | Carbon (C) | 0.20 max | | Manganese (Mn) | 0.20 - 0.60 | | Phosphorus (P) | 0.025 max | | Sulfur (S) | 0.025 max | | Silicon (Si) | 0.15 - 0.40 | | Nickel (Ni) | 2.00 - 3.50 | | Chromium (Cr) | 1.00 - 1.90 | | Molybdenum (Mo) | 0.40 - 0.60 | **Key Composition Features:** - **High Nickel Content (2.00-3.50%)**: Provides exceptional low-temperature toughness - **Chromium-Molybdenum Combination**: Enhances hardenability and strength - **Controlled Carbon Content**: Ensures good weldability and formability - **Low Manganese Range**: Optimized for specific hardenability requirements #### **3. Physical & Mechanical Properties** **Mechanical Properties (Quenched & Tempered):** | Property | Requirement | |----------|-------------| | **Tensile Strength** | 105 - 135 ksi (725 - 930 MPa) | | **Yield Strength** | 85 ksi min (585 MPa min) | | **Elongation in 2 inches** | 16% min | | **Reduction of Area** | 40% min | | **Charpy V-Notch Impact** | 40 ft-lb min at -100°F (-73°C) | **Enhanced Low-Temperature Performance:** - **Exceptional Impact Toughness**: Maintains high toughness at cryogenic temperatures - **Excellent Fracture Resistance**: Superior performance in low-temperature applications - **Good Hardenability**: Consistent properties in thick sections - **Stable Microstructure**: Reliable performance under thermal cycling **Physical Properties (Typical):** - **Density**: 0.285 lb/in³ (7,890 kg/m³) - **Modulus of Elasticity**: 29,000 ksi (200 GPa) - **Thermal Expansion Coefficient**: 6.4 × 10⁻⁶/°F (11.5 × 10⁻⁶/°C) - **Thermal Conductivity**: 26.5 W/m·K at 212°F (100°C) #### **4. Product Applications** ASTM A543 Grade B is specified for demanding low-temperature and high-pressure applications: **Low-Temperature Service:** - Cryogenic storage vessels - LNG processing equipment - Low-temperature pressure vessels - Cryogenic transport containers **Power Generation:** - Nuclear reactor components - High-pressure turbine parts - Power plant pressure vessels - Energy storage systems **Chemical Processing:** - High-pressure reactors - Chemical process vessels - Petrochemical equipment - Synthesis converters #### **5. International Standards & Equivalents** | Region/Country | Standard | Equivalent Grade | Notes | |----------------|----------|------------------|-------| | **International** | **ISO 9328-2** | 12Ni14 | Similar nickel steel grade | | **Europe** | **EN 10028-4** | 12Ni14 | Low temperature nickel steel | | **Japan** | **JIS G3127** | SL3N255 | Low temperature pressure vessel steel | | **Germany** | **DIN 17280** | 12Ni14 | Cryogenic nickel steel | **Grade Comparison within A543:** | Parameter | Grade B | Grade C | |-----------|---------|---------| | **Nickel Content** | 2.00-3.50% | 3.00-4.50% | | **Chromium Content** | 1.00-1.90% | 1.00-1.90% | | **Low-Temperature Toughness** | Excellent | Superior | #### **6. Fabrication & Quality Assurance** **Welding and Fabrication:** - **Pre-heat requirement**: 300-400°F (150-200°C) - **Post-weld heat treatment**: Recommended at 1100-1200°F (595-650°C) - **Welding consumables**: Low-hydrogen electrodes required - **Procedure qualification**: Essential for all welding operations **Heat Treatment:** - **Austenitizing**: 1550-1650°F (845-900°C) - **Quenching**: Accelerated cooling required - **Tempering**: 1100-1300°F (595-705°C) - **Quality verification**: Comprehensive testing mandatory **Quality Control Requirements:** - **Impact testing**: Required at -100°F (-73°C) - **Tension tests**: From each heat treatment charge - **Ultrasonic examination**: Available as supplementary requirement - **Hardness testing**: Typically 240-300 HBW --- **Technical Advantages:** - **Excellent low-temperature toughness** - **High strength-to-weight ratio** - **Good weldability and formability** - **Superior hardenability in thick sections** **Design Considerations:** - **ASME Section VIII** design rules applicable - **Low-temperature service** capability down to -100°F - **Fracture mechanics analysis** recommended for critical applications - **Environmental factors** consideration for specific service conditions **Service Limitations:** - **Minimum design temperature**: -100°F (-73°C) - **Maximum service temperature**: 800°F (425°C) - **Corrosion considerations**: May require protection in aggressive environments - **Fabrication requirements**: Strict control of welding and heat treatment **Disclaimer:** This information is for technical reference only. For pressure vessel applications, consult the latest ASTM A543 specification and applicable ASME Code requirements. Material selection and fabrication must be approved by qualified engineers and comply with all relevant regulatory standards and quality assurance protocols. -:- For detailed product information, please contact sales. -: ASTM A543 Steel, Grade B Specification Dimensions Size： Diameter 20-1000 mm Length <4452 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 A543 Steel, Grade B Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A543 Steel Capillary, Grade B -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A543 Steel Capillary, Grade B -:- For detailed product information, please contact sales. -:

Packing of ASTM A543 Steel Capillary, Grade B -:- 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 923 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