A387Gr11CL1/A387 Grade 11 Class 1, a chromium-molybdenum alloy steel plate, is a premium material widely utilized in the construction of pressure vessels and boilers in various industries. This steel grade, conforming to the ASTM standard, offers exceptional high-temperature strength, oxidation resistance, and sulfide corrosion resistance, making it an ideal choice for demanding applications.

Chemical Composition:

The A387Gr11CL1 steel plate boasts a well-balanced chemical composition that contributes to its superior performance. The key elements and their respective ranges are as follows:

- Carbon (C): 0.05-0.17%

- Silicon (Si): 0.50-0.80%

- Manganese (Mn): 0.40-0.65% (some sources indicate 0.40-0.70%)

- Phosphorus (P): ≤ 0.035%

- Sulfur (S): ≤ 0.035%

- Chromium (Cr): 1.00-1.50% (alternatively, 2.25-2.75% as per other sources)

- Molybdenum (Mo): 0.45-0.65% (alternatively, 0.90-1.10% as per other sources)

This precise blend of elements ensures the steel's high-temperature stability, corrosion resistance, and mechanical strength.

Mechanical Properties:

A387Gr11CL1 exhibits remarkable mechanical properties, making it suitable for high-pressure and high-temperature applications. Its key mechanical properties include:

- Tensile Strength: 415-585 MPa (depending on heat treatment and thickness)

- Yield Strength: ≥ 240 MPa

These properties ensure that the steel plate can withstand significant loads and temperature fluctuations without compromising structural integrity.

Heat Treatment State:

The A387Gr11CL1 steel plate is typically supplied in a heat-treated condition, either in the annealed state or with a combination of normalizing and tempering. This heat treatment process eliminates internal stresses, refines the microstructure, and enhances the overall mechanical properties of the steel. Custom heat treatment options can also be provided based on specific customer requirements.

Size Range:

The A387Gr11CL1 steel plate is available in a wide range of thicknesses, widths, and lengths to cater to various application needs. Commonly available sizes include:

- Thickness: 6mm-130mm

- Width: 2000mm-2500mm

- Length: Up to 12000mm

These dimensions can be further customized to meet specific project requirements.

Impact Testing:

To ensure the steel's toughness and resistance to impact loading, A387Gr11CL1 undergoes rigorous impact testing. The specific impact test requirements, such as Charpy V-notch impact tests, are defined by the ASTM standard and ensure that the steel plate meets the necessary toughness criteria for its intended application.

Main Application Scenarios:

A387Gr11CL1 steel plates find extensive applications in various industries, particularly in the construction of pressure vessels and boilers. Some of the primary application scenarios include:

- Petroleum refining and processing equipment

- Chemical reactors and storage tanks

- Power generation boilers and heat exchangers

- High-pressure piping systems

- Spherical storage tanks with capacities exceeding 50 cubic meters

TJC Steel Group Supply Cases:

As a leading supplier of high-quality steel products, TJC Steel Group has successfully delivered A387Gr11CL1 steel plates to numerous prestigious projects worldwide. Some notable supply cases include:

- Supplying A387Gr11CL1 steel plates for the construction of a large-scale petrochemical reactor in the Middle East, where the steel's high-temperature strength and corrosion resistance were crucial.

- Providing custom-sized A387Gr11CL1 plates for the fabrication of high-pressure boilers in a power plant in Europe, ensuring reliable operation under extreme conditions.

- Collaborating with a major oil and gas company in Asia to supply A387Gr11CL1 steel plates for the construction of spherical storage tanks, leveraging the steel's exceptional toughness and impact resistance.