ASTM A553/A553M 7Ni/8Ni/9Ni Steel Plates for Pressure Vessel
ASTM A553/A553M 7%, 8%, and 9% Nickel Steel Plates are engineered for critical applications in pressure vessels requiring exceptional toughness and strength at cryogenic temperatures. These steel plates, enriched with high nickel content, offer superior mechanical properties and durability. They are ideal for storing and transporting liquefied natural gas (LNG), petroleum gas (LPG), and other cryogenic liquids. Widely utilized in the petrochemical, oil and gas, marine, aerospace, and power generation industries, these plates ensure structural integrity and safety in demanding low-temperature environments. Their unique composition and performance characteristics make them indispensable in constructing cryogenic storage tanks, pipelines, offshore platforms, and specialized industrial equipment, where maintaining reliability under extreme conditions is paramount.
Chemical Composition of ASTM A553/A553M 7Ni/8Ni/9Ni Steel Plates for Pressure Vessel
| Element |
Type I |
Type II |
Type III |
| Carbon, max |
0.13 |
0.13 |
0.13 |
| Manganese, max |
| Heat analysis |
0.90 |
0.90 |
0.90 |
| Product analysis |
0.98 |
0.98 |
0.98 |
| Phosphorus, max |
0.015 |
0.015 |
0.01 |
| Sulfur, max |
0.015 |
0.015 |
0.01 |
| Silicon |
| Heat analysis |
0.15–0.40 |
0.15–0.40 |
0.05–0.30 |
| Product analysis |
0.13–0.45 |
0.13–0.45 |
|
| Nickel |
| Heat analysis |
8.50–9.50 |
7.50–8.50 |
6.50–7.50 |
| Product analysis |
8.40–9.60 |
7.40–8.60 |
|
| Molybdenum |
… |
… |
0.10–0.30 |
| Columbium (Niobium) |
… |
… |
0.03 |
Mechanical Properties of ASTM A553/A553M 7Ni/8Ni/9Ni Steel Plates for Pressure Vessel
| Property |
Type I |
Type II |
Type III |
| Tensile Strength, ksi (MPa) |
100 to 120 (690–825) |
100 to 120 (690–825) |
100 to 120 (690–825) |
| Yield Strength (0.2% offset), ksi (MPa) |
85 (585) |
85 (585) |
85 (585) |
| Elongation in 2 in. (50 mm), min, % |
20.0 |
20.0 |
20.0 |
Specifications
| Standard |
ASTM A553/A553M 7Ni/8Ni/9Ni Steel Plates for Pressure Vessel |
| Steel Grade |
Type I (9% Ni), Type II (8% Ni), Type III (7% Ni) |
| Dimension |
T 5-350mm × W 900-4100mm × L 3000-25000mm |
| Packing |
Packed with steel-framed plywood pallets |
| Supply Conditions |
AR = as-rolled TM = thermo-mechanical controlled processing CR = controlled QT = quenched and tempered N = normalized |
| Impact Test |
Type I or Type III: @−320°F [−195°C], Type II: @−275°F [−170°C] |
| Place of Origin |
Made in China |
| MOQ |
50 Tons |
| Transportation |
Railway, By Sea |
Applications of ASTM A553/A553M 7Ni/8Ni/9Ni Steel Plates for Pressure Vessel
ASTM A553/A553M 7%, 8%, and 9% Nickel Steel Plates are specifically designed for pressure vessels and other applications requiring superior toughness and strength at low temperatures.
Liquefied Natural Gas (LNG) Storage: These nickel steel plates are commonly used to construct LNG storage tanks due to their toughness at cryogenic temperatures.
Liquefied Petroleum Gas (LPG) Tanks: Suitable for LPG storage tanks that operate at very low temperatures, ensuring safety and structural integrity.
Chemical Storage Tanks: Used to store chemicals that must be kept at low temperatures to maintain stability and prevent hazardous reactions.
Process Equipment: Employed in various processing equipment within the petrochemical industry where low-temperature operation is essential.
Offshore Platforms: These are used to construct offshore platforms and subsea installations operating in cold ocean environments.
Cryogenic Pipelines: Suitable for pipelines that transport cryogenic gases such as LNG over long distances.
Cryogenic Distillation Columns: These are used to construct distillation columns and other components in ASUs, where gases are separated at cryogenic temperatures.
Shipbuilding: Employed in constructing LNG and LPG carriers, ensuring the vessels can safely transport cryogenic liquids.
Submarine Hulls: These are used in building submarine hulls, where materials must withstand the extreme pressures and low temperatures of deep-sea environments.
Cryogenic Fuel Storage: This product is suitable for storage tanks in power plants that use cryogenic fuels such as LNG, ensuring safe and efficient fuel storage.
Rocket Fuel Storage: Used to construct liquid rocket fuels, often kept at cryogenic temperatures.
