ASTM A353/A353M 9Ni Alloy Steel Plates for Pressure Vessel
- Standard: ASTM A353/A353M
- Grade: 9% Ni, 9% Nickel
- Dimension: T 5-350mm × W 910-4100mm × L 3000-25000mm
ASTM A353/A353M 9Ni Alloy Steel Plates for Pressure Vessel
ASTM A353/A353M 9Ni Alloy Steel Plates are high-performance materials engineered specifically for pressure vessels operating in extremely low-temperature environments, such as cryogenic applications. With a nickel content of approximately 9%, these plates provide superior toughness, fracture resistance, and durability, ensuring reliable performance under temperatures as low as -196°C (-320°F). Commonly used in the construction of cryogenic storage tanks, liquefied gas carriers, and other critical components in the petrochemical, offshore, and power generation industries, ASTM A353/A353M 9Ni Alloy Steel Plates are designed to meet the stringent demands of low-temperature service. Their exceptional mechanical properties and resilience make them the material of choice for ensuring safety and structural integrity in some of the most challenging industrial applications.
Chemical Composition of ASTM A353/A353M 9Ni Alloy Steel Plates for Pressure Vessel
| Element | Composition, % |
| Carbon, max | 0.13 |
| Manganese, max | |
| Heat analysis | 0.90 |
| Product analysis | 0.98 |
| Phosphorus, max | 0.015 |
| Sulfur, max | 0.015 |
| Silicon | |
| Heat analysis | 0.15–0.40 |
| Product analysis | 0.13–0.45 |
| Nickel | |
| Heat analysis | 8.50–9.50 |
| Product analysis | 8.40–9.60 |
Mechanical Properties of ASTM A353/A353M 9Ni Alloy Steel Plates for Pressure Vessel
| Property | Requirement |
| Tensile strength, ksi [MPa] | 100–120 [690–825] |
| Yield strength (0.2% offset), min, ksi [MPa] | 75 [515] |
| Elongation in 2 in. [50 mm], min, % | 20 |
Specifications
| Standard | ASTM A353/A353M 9Ni Alloy Steel Plates for Pressure Vessel |
| Steel Grade | 9% Nickel, 9Ni |
| Dimension | T 5-350mm × W 900-4100mm × L 3000-25000mm |
| Packing | Packed with steel-framed plywood pallets |
| Heat Treatment | First Normalizing Treatment—Heat the plate to a uniform temperature of 1650 °F 6 25 °F [900 °C 6 15 °C], hold at that temperature for a minimum of 1 h/in. [2.4 min/mm] of thickness, but in no case less than 15 min, and cool in air. Second Normalizing Treatment—Reheat the plate to a uniform temperature of 1450 °F 6 25 °F [790 °C 6 15 °C], hold at that temperature for a minimum of 1 h/in. [2.4 min/mm] of thickness, but in no case less than 15 min, and cool in air. Tempering Treatment—Reheat the plate to a uniform temperature within the range from 1050 °F to 1125 °F [565 °C to 605 °C], hold within that temperature range for a minimum of 1 h/in. [2.4 min/mm] of thickness, but in no case less than 15 min, and cool in air or water quench at a rate not less than 300 °F ⁄h [165 °C ⁄h]. |
| Impact Test | @−320 °F [−195 °C] or at such other temperatures as are agreed upon |
| Place of Origin | Made in China |
| MOQ | 50 Tons |
| Transportation | Railway, By Sea |
Applications of ASTM A353/A353M 9Ni Alloy Steel Plates for Pressure Vessel
ASTM A353/A353M 9Ni Alloy Steel Plates are specially designed for applications in pressure vessels that operate under extremely low temperatures, particularly in cryogenic environments. The high nickel content (approximately 9%) provides exceptional toughness and resistance to brittle fracture, making these steel plates ideal for the following applications:
- Cryogenic Storage Tanks: These plates are widely used in the construction of storage tanks for liquefied natural gas (LNG) and other cryogenic liquids, where temperatures can drop to as low as -196°C (-320°F).
- Liquefied Gas Carriers: Due to their superior strength and fracture toughness at low temperatures, 9Ni alloy steel plates are commonly used in the construction of ship hulls and containers designed to transport liquefied gases.
- Petrochemical and Chemical Industries: These plates are utilized in pressure vessels that store and process gases and liquids at cryogenic temperatures, ensuring safe and efficient operation in highly corrosive environments.
- Offshore and Marine Applications: The alloy’s resilience in sub-zero temperatures makes it suitable for use in offshore platforms and marine structures where low-temperature conditions are prevalent.
- Power Generation: ASTM A353/A353M 9Ni Alloy Steel Plates are employed in heat exchangers and other pressure vessels in power plants that require reliable performance under low-temperature conditions.
