ASTM A736/A736M NiCuCrMoNb Alloy Steel Plates for Pressure Vessel
ASTM A736/A736M NiCuCrMoNb Alloy Steel Plates are meticulously engineered for high-performance applications in pressure vessels, where superior strength, toughness, and durability are paramount. These steel plates, alloyed with nickel, copper, chromium, molybdenum, and niobium, offer exceptional mechanical properties and enhanced resistance to high-pressure and low-temperature environments. Widely utilized in the petrochemical, oil and gas, power generation, marine, and construction industries, ASTM A736/A736M plates ensure the structural integrity and safety of critical components such as storage tanks, reactors, offshore platforms, and heat exchangers. Their unique composition provides outstanding resistance to stress corrosion cracking, making them indispensable for applications involving harsh chemicals and extreme operating conditions. These plates exemplify reliability and performance, catering to the stringent demands of modern industrial applications.
Chemical Composition of ASTM A736/A736M NiCuCrMoNb Alloy Steel Plates for Pressure Vessel
| Element |
Composition % (Grade A) |
Composition % (Grade C) |
| Carbon, max |
|
|
| Heat analysis |
0.07 |
0.07 |
| Product analysis |
0.09 |
0.09 |
| Manganese |
|
|
| Heat analysis |
0.40–0.70 |
1.30–1.65 |
| Product analysis |
0.35–0.78 |
1.21–1.77 |
| Phosphorus, max |
0.025 |
0.025 |
| Sulfur, max |
0.025 |
0.025 |
| Silicon, max |
|
|
| Heat analysis |
0.40 |
0.40 |
| Product analysis |
0.45 |
0.45 |
| Chromium |
|
|
| Heat analysis |
0.60–0.90 |
– |
| Product analysis |
0.56–0.94 |
– |
| Nickel |
|
|
| Heat analysis |
0.70–1.00 |
0.70–1.00 |
| Product analysis |
0.67–1.03 |
0.67–1.03 |
| Molybdenum |
|
|
| Heat analysis |
0.15–0.25 |
0.15–0.25 |
| Product analysis |
0.12–0.28 |
0.12–0.28 |
| Copper |
|
|
| Heat analysis |
1.00–1.30 |
1.00–1.30 |
| Product analysis |
0.95–1.35 |
0.95–1.35 |
| Columbium, min |
0.02 |
0.02 |
| Product analysis |
0.01 |
0.01 |
Mechanical Properties of ASTM A736/A736M NiCuCrMoNb Alloy Steel Plates for Pressure Vessel
| Property |
Grade A, Class 1 |
Grade A, Class 2 |
Grade A, Class 3 |
Grade C, Class 1 |
Grade C, Class 3 |
| Yield Strength, min |
|
|
|
|
|
| 3/4 in. and under [20 mm and under] |
80 ksi [550 MPa] |
65 ksi [450 MPa] |
75 ksi [515 MPa] |
90 ksi [620 MPa] |
85 ksi [585 MPa] |
| Over 3/4 to 1 in. [over 20 to 25 mm] |
– |
65 ksi [450 MPa] |
75 ksi [515 MPa] |
– |
80 ksi [550 MPa] |
| Over 1 to 2 in. [over 25 to 50 mm] |
– |
60 ksi [415 MPa] |
75 ksi [515 MPa] |
– |
80 ksi [550 MPa] |
| Over 2 to 4 in. [over 50 to 100 mm] |
– |
55 ksi [380 MPa] |
65 ksi [450 MPa] |
– |
– |
| Over four in. [over 100 mm] |
– |
50 ksi [345 MPa] |
60 ksi [415 MPa] |
– |
– |
| Tensile Strength |
|
|
|
|
|
| 3/4 in. and under [20 mm and under] |
90-110 ksi [620–760 MPa] |
72-92 ksi [495–635 MPa] |
85-105 ksi [585–725 MPa] |
100-120 ksi [690–825 MPa] |
95-115 ksi [655–795 MPa] |
| Over 3/4 to 1 in. [over 20 to 25 mm] |
– |
72-92 ksi [495–635 MPa] |
85-105 ksi [585–725 MPa] |
– |
90-110 ksi [620–760 MPa] |
| Over 1 to 2 in. [over 25 to 50 mm] |
– |
72-92 ksi [495–635 MPa] |
85-105 ksi [585–725 MPa] |
– |
90-110 ksi [620–760 MPa] |
| Over 2 to 4 in. [over 50 to 100 mm] |
– |
65-85 ksi [450–585 MPa] |
75-95 ksi [515–655 MPa] |
– |
– |
| Over four in. [over 100 mm] |
– |
60-80 ksi [415–550 MPa] |
70-90 ksi [485–620 MPa] |
– |
– |
| Elongation, 2 in. [50 mm], min % |
20 |
20 |
20 |
20 |
20 |
Specifications
| Standard |
ASTM A736/A736M NiCuCrMoNb Alloy Steel Plates for Pressure Vessel |
| Steel Grade/Material |
Grade A Class 1/2/3 |
| 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 |
| Place of Origin |
Made in China |
| MOQ |
50 Tons |
| Transportation |
Railway, By Sea |
Applications of ASTM A736/A736M NiCuCrMoNb Alloy Steel Plates for Pressure Vessel
ASTM A736/A736M NiCuCrMoNb Alloy Steel Plates are utilized in various critical applications requiring high strength and toughness, particularly in environments subject to extreme temperatures and pressures.
High-Pressure Vessels: Ideal for constructing vessels that operate under high pressure, ensuring structural integrity and safety.
Cryogenic Vessels: Suitable for pressure vessels that store and transport cryogenic liquids, benefiting from the alloy’s toughness at low temperatures.
Chemical Reactors: Used in reactors where resistance to high pressure and corrosive chemicals is crucial.
Storage Tanks: Applied to store volatile chemicals and gases, ensuring durability and resistance to stress corrosion cracking.
Offshore Platforms: These are essential for building structural components of offshore drilling platforms that are exposed to harsh marine environments and high pressures.
Pipeline Construction: Used in high-pressure pipelines for transporting oil and gas, offering superior toughness and resistance to environmental cracking.
Steam Boilers: Employed in constructing steam boilers that operate at high pressures and temperatures, ensuring reliable performance and longevity.
Heat Exchangers: Suitable for heat exchangers in power plants, where materials must withstand thermal cycling and high-pressure conditions.
Shipbuilding: Utilized in the construction of ships, particularly in areas subjected to high stress and corrosive seawater.
Submarine Hulls: Applied in building submarine hulls that must endure high pressures at great ocean depths and resist corrosion.
Bridges: These are used to construct bridges requiring materials that can handle heavy loads and resist environmental stresses.
Structural Components: Suitable for high-strength structural components in buildings, ensuring safety and durability.
Autoclaves: Employed in manufacturing autoclaves that operate under high pressure and temperature for sterilization and material processing.
Pressure Piping: Applied in high-pressure piping systems within industrial facilities, ensuring safe and efficient fluid transport.
