ASTM A553/A553M 7Ni/8Ni/9Ni Steel Plates for Pressure Vessel

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, making them ideal for use in the storage and transportation of liquefied natural gas (LNG) and liquefied petroleum gas (LPG), as well as 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 the construction of 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 use in pressure vessels and other applications that require superior toughness and strength at low temperatures.

Cryogenic Pressure Vessels:

Liquefied Natural Gas (LNG) Storage: These nickel steel plates are commonly used in the construction of LNG storage tanks due to their excellent 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.

Petrochemical Industry:

Chemical Storage Tanks: Used in the storage of chemicals that need to 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.

Oil and Gas Industry:

Offshore Platforms: Utilized in the construction of offshore platforms and subsea installations that operate in cold ocean environments.

Cryogenic Pipelines: Suitable for pipelines that transport cryogenic gases such as LNG over long distances.

Air Separation Units (ASUs):

Cryogenic Distillation Columns: Used in the construction of distillation columns and other components in ASUs, where gases are separated at cryogenic temperatures.

Marine Industry:

Shipbuilding: Employed in the construction of LNG and LPG carriers, ensuring the vessels can safely transport cryogenic liquids.

Submarine Hulls: Used in building submarine hulls, where materials must withstand the extreme pressures and low temperatures of deep-sea environments.

Power Generation:

Cryogenic Fuel Storage: Suitable for storage tanks in power plants that use cryogenic fuels such as LNG, ensuring safe and efficient fuel storage.

Aerospace Industry:

Rocket Fuel Storage: Used in the construction of storage tanks for liquid rocket fuels, which are often kept at cryogenic temperatures.