ASTM A516, Grade 55

ASTM A516, Grade 55 Product Information -:- For detailed product information, please contact sales. -: ASTM A516, Grade 55 Synonyms -:- For detailed product information, please contact sales. -:

ASTM A516, Grade 55 Product Information -:- For detailed product information, please contact sales. -: ### **Product Datasheet: ASTM A516 Grade 55 Pressure Vessel Quality Carbon Steel Plate** #### **1. Product Overview** ASTM A516 Grade 55 is a carbon steel plate specifically designed for moderate and lower-temperature service in pressure vessels. This grade is part of the A516 specification covering carbon steel plates primarily intended for fusion welding in pressure vessels and other critical applications. Grade 55 provides an excellent balance of strength, toughness, and weldability, making it particularly suitable for service where notch toughness is important. **Key Advantages:** - **Excellent Notch Toughness:** Specifically designed for low-temperature service applications - **Superior Weldability:** Optimal chemistry control ensures reliable welding performance - **Proven Reliability:** Industry standard for pressure containment applications - **Cost-Effective:** Provides required performance without expensive alloying elements - **Versatile Application:** Suitable for a wide range of pressure and temperature conditions --- #### **2. International Standard** This product conforms to the latest edition of: - **ASTM A516/A516M:** Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower-Temperature Service The material is approved for ASME Boiler and Pressure Vessel Code applications under specification **SA-516 Grade 55**. --- #### **3. Chemical Composition (Heat Analysis, %)** The chemical composition is carefully controlled to achieve the specified mechanical properties and enhanced toughness. | Element | Composition (%) | |---------|-----------------| | Carbon (C), max | 0.18-0.25 | | Manganese (Mn) | 0.60-0.90 | | Phosphorus (P), max | 0.025 | | Sulfur (S), max | 0.025 | | Silicon (Si) | 0.15-0.40 | *Note: Composition ranges may vary based on thickness and heat treatment. The steel must be killed and may be fine-grained practice.* --- #### **4. Mechanical Properties** Mechanical properties are guaranteed through standardized testing procedures. | Property | Value | Unit | |----------|-------|------| | **Tensile Strength** | 380-515 | MPa (55-75 ksi) | | **Yield Strength, min** | 205 | MPa (30 ksi) | | **Elongation in 2" (50 mm), min** | 27 | % | **Impact Properties (Charpy V-Notch):** - **Test Temperature:** -29°C (-20°F) - **Minimum Average Energy:** 20 J (15 ft-lb) - **Minimum Individual Value:** 16 J (12 ft-lb) *Note: Mechanical properties may vary with plate thickness and heat treatment condition.* --- #### **5. Physical Properties (Typical Values)** - **Density:** 7.85 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity:** 200 GPa (29,000 ksi) - **Poisson's Ratio:** 0.29 - **Thermal Conductivity:** 51.9 W/m·K (at 100°C) - **Specific Heat Capacity:** 486 J/kg·K (at 100°C) - **Coefficient of Thermal Expansion:** 11.5 × 10⁻⁶/°C (20-100°C) --- #### **6. Heat Treatment** ASTM A516 Grade 55 is typically supplied in one of the following conditions: - **Normalized** - **Normalized and Tempered** - **Simulated Post-Weld Heat Treated** The heat treatment is selected to achieve the required mechanical properties and toughness characteristics. --- #### **7. Product Applications** ASTM A516 Grade 55 is extensively used in pressure vessel fabrication and other critical applications requiring reliable performance at moderate and lower temperatures. **Primary Applications Include:** - **Pressure Vessels:** Storage tanks, reactors, and separators in petrochemical plants - **Heat Exchangers:** Shells, tubesheets, and channels - **Boiler Components:** Drums and pressure parts - **Nuclear Components:** Class 2 and 3 pressure vessels - **Cryogenic Storage:** Tanks for liquefied gases - **Power Generation Equipment:** Pressure components for fossil fuel plants --- #### **8. Fabrication & Welding Characteristics** **Welding Performance:** - Excellent weldability using all standard processes (SMAW, GMAW, FCAW, SAW) - Preheating requirements depend on thickness and restraint - Low hydrogen welding processes mandatory - Post-weld heat treatment often required for stress relief **Forming & Machining:** - Good cold forming characteristics - Suitable for hot forming with proper temperature control - Excellent machinability in normalized condition - Forms well into complex shapes and heads --- #### **9. Service Limitations & Considerations** - **Temperature Range:** Suitable for service down to -29°C (-20°F) - **Upper Temperature Limit:** Approximately 425°C (800°F) for prolonged service - **Corrosion Resistance:** Limited inherent resistance - requires protection in corrosive environments - **Impact Testing:** Mandatory Charpy V-notch testing for code compliance - **Quality Assurance:** Strict non-destructive examination requirements --- #### **10. Quality Assurance & Testing** - **Manufacturing Process:** Killed steel, fine grain practice - **Non-Destructive Testing:** Ultrasonic testing available as supplementary requirement - **Certification:** Full traceability with Mill Test Certificate - **Repair:** Weld repair permitted following qualified procedures and acceptance criteria --- **Disclaimer:** This technical datasheet provides general information for reference purposes only. Specific applications require consultation of the complete ASTM A516 standard and applicable pressure vessel codes. Always consult with qualified materials engineers and refer to the latest edition of governing standards for critical applications. The manufacturer's recommendations and applicable code requirements should always take precedence. -:- For detailed product information, please contact sales. -: ASTM A516, Grade 55 Specification Dimensions Size： Diameter 20-1000 mm Length <4159 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 A516, Grade 55 Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A516, Grade 55 -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A516, Grade 55 -:- For detailed product information, please contact sales. -:

Packing of ASTM A516, Grade 55 -:- 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 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 630 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