ASTM A353 Alloy Steel Seamless tube

ASTM A353 Alloy Steel Seamless tube Product Information -:- For detailed product information, please contact sales. -: ASTM A353 Alloy Steel Seamless tube Synonyms -:- For detailed product information, please contact sales. -:

ASTM A353 Alloy Steel Product Information -:- For detailed product information, please contact sales. -: ### **Product Introduction: ASTM A353 Alloy Steel** **ASTM A353** is a high-strength nickel-alloy steel plate designed for pressure vessel applications requiring exceptional low-temperature toughness. This specification covers 9% nickel steel plates that are double normalized and tempered, providing outstanding impact properties for cryogenic service down to -196°C (-320°F). --- #### **1. International Standards & Classification** **Primary Standard:** **ASTM A353/A353M** - "Standard Specification for Pressure Vessel Plates, Alloy Steel, 9 Percent Nickel, Double-Normalized and Tempered" **Material Characteristics:** - 9% nickel alloy steel - Double normalized and tempered condition - Exceptional cryogenic toughness - Designed for liquefied gas storage **International Equivalents:** - **EN 10028-4**: X8Ni9 - **JIS G3127**: SLA 235A - **GB/T 24511**: 9Ni - **ISO 9328-4**: X8Ni9 --- #### **2. Chemical Composition** The chemical composition requirements for ASTM A353: | Element | Composition (Maximum %) | |---|---| | Carbon (C) | 0.13 | | Manganese (Mn) | 0.90 | | Phosphorus (P) | 0.035 | | Sulfur (S) | 0.040 | | Silicon (Si) | 0.35 | | Nickel (Ni) | 8.50-9.50 | **Key Composition Features:** - **High Nickel Content**: 8.50-9.50% for exceptional low-temperature toughness - **Low Carbon**: Maximum 0.13% for weldability and toughness - **Controlled Manganese**: 0.90% maximum for strength balance - **Silicon Control**: 0.35% maximum for deoxidation --- #### **3. Physical & Mechanical Properties** **Mechanical Properties (for all thicknesses):** | Property | Value | |---|---| | **Tensile Strength** | 690-825 MPa (100-120 ksi) | | **Yield Strength (min.)** | 515 MPa (75 ksi) | | **Elongation in 2" (min.)** | 20% | | **Elongation in 8" (min.)** | 22% | **Cryogenic Toughness Properties:** - **Charpy V-Notch Test Temperature**: -196°C (-320°F) - **Minimum Impact Energy**: 27 J (20 ft-lbf) - **Exceptional Toughness**: Maintains ductility at liquid nitrogen temperatures **Physical Properties:** - **Density**: 7.87 g/cm³ (0.284 lb/in³) - **Modulus of Elasticity**: 200 GPa (29,000 ksi) - **Thermal Conductivity**: 38.5 W/m·K - **Coefficient of Thermal Expansion**: 10.5 × 10⁻⁶/°C (-100°C to 20°C) - **Specific Heat Capacity**: 460 J/kg·K --- #### **4. Product Applications** **Cryogenic Pressure Vessels:** - LNG (Liquefied Natural Gas) storage tanks - Liquid nitrogen containers - Liquid oxygen vessels - Liquid argon storage systems **Industrial Gas Processing:** - Air separation plant equipment - Industrial gas storage vessels - Cryogenic transportation tanks - Gas processing facility components **Energy Sector:** - LNG import/export terminals - Cryogenic energy storage systems - Liquefaction plant equipment - Regasification facilities **Special Applications:** - Research cryostats - Superconducting magnet containers - Space program components - Advanced scientific equipment --- #### **5. Fabrication Characteristics** **Welding Performance:** - **Good Weldability**: With nickel-alloy filler metals - **Preheat Requirements**: Generally not required - **Interpass Temperature**: Must be controlled below 150°C (300°F) - **Recommended Processes**: GTAW, GMAW, SMAW - **Filler Metals**: ENiCrMo-6, ENiCrFe-3 or equivalent nickel alloys **Forming & Machining:** - **Good Formability**: Suitable for cold forming operations - **Machinability**: Fair (requires appropriate tooling and techniques) - **Cutting Methods**: Plasma, waterjet, and laser cutting preferred - **Bend Performance**: Excellent for cryogenic applications **Heat Treatment:** - Supplied in double normalized and tempered condition - First normalizing: 875-925°C (1600-1700°F) - Second normalizing: 775-825°C (1425-1515°F) - Tempering: 565-605°C (1050-1125°F) **Quality Assurance:** - **Mandatory Impact Testing**: Charpy V-Notch at -196°C (-320°F) - **Comprehensive Chemical Analysis**: Full certification required - **Mechanical Testing**: Multiple locations for thick plates - **Non-Destructive Testing**: UT, RT, MT as specified --- ### **Technical Summary** ASTM A353 represents a premium 9% nickel alloy steel specifically engineered for the most demanding cryogenic applications, particularly LNG storage at -162°C (-260°F). The double normalizing and tempering heat treatment produces a fine-grained microstructure that provides exceptional toughness at extremely low temperatures while maintaining high strength levels. The high nickel content (8.50-9.50%) is crucial for maintaining face-centered cubic structure at cryogenic temperatures, ensuring ductile behavior where conventional steels would become brittle. This unique combination of properties makes A353 the material of choice for large-scale LNG storage tanks and other critical cryogenic pressure vessels. While requiring specialized welding procedures and careful thermal control during fabrication, A353 offers reliable performance in the most severe low-temperature service conditions. The material's proven track record in LNG applications worldwide has established it as the industry standard for cryogenic storage where safety, reliability, and long-term performance are paramount. ASTM A353's ability to operate safely at temperatures as low as -196°C (-320°F), combined with its high strength and excellent fracture toughness, makes it an indispensable material for the growing global LNG industry and other advanced cryogenic applications where conventional materials would be unsuitable. -:- For detailed product information, please contact sales. -: ASTM A353 Alloy Steel Specification Dimensions Size： Diameter 20-1000 mm Length <4358 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 A353 Alloy Steel Properties -:- For detailed product information, please contact sales. -:

Applications of ASTM A353 Alloy Steel Seamless tube -:- For detailed product information, please contact sales. -: Chemical Identifiers ASTM A353 Alloy Steel Seamless tube -:- For detailed product information, please contact sales. -:

Packing of ASTM A353 Alloy Steel Seamless tube -:- 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 Seamless tube 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 829 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