In the realm of pressure vessel and boiler construction, A387Gr12CL2/A387 Grade 12 Class 2 chromium-molybdenum alloy steel plate stands as a testament to superior engineering excellence. This grade of steel, specifically designed for high-temperature and pressure applications, offers unparalleled strength, corrosion resistance, and durability. Manufactured and supplied by TJC Steel Group, A387Gr12CL2 is a premium choice for a wide array of industries requiring the utmost in performance and reliability.

Chemical Composition

The A387Gr12CL2 steel plate boasts a meticulously balanced chemical composition that contributes to its exceptional properties. Key elements and their respective ranges include:

- Carbon (C): 0.05% - 0.17%

- Silicon (Si): 0.15% - 0.40% (note: some sources indicate 0.15% - 0.55%, but for clarity, the stricter range is emphasized here)

- Manganese (Mn): 0.40% - 0.65%

- Phosphorus (P): ≤ 0.025%

- Sulfur (S): ≤ 0.035%

- Chromium (Cr): 0.80% - 1.15%

- Molybdenum (Mo): 0.45% - 0.60%

This precise blend ensures optimal mechanical properties and resistance to harsh environments.

Mechanical Properties

The mechanical prowess of A387Gr12CL2 is unmatched, making it ideal for demanding applications. Key mechanical properties include:

- Tensile Strength: 380 MPa - 550 MPa (55,163 psi - 79,757 psi)

- Yield Strength: ≥ 230 MPa (33,227 psi)

- Elongation (200 mm): ≥ 18%

- Elongation (50 mm): ≥ 22%

- Charpy V-Notch Impact Energy: Average of three specimens ≥ 54 J, with one specimen allowed to be ≥ 47 J

These robust mechanical properties ensure that A387Gr12CL2 can withstand extreme temperatures and pressures while maintaining structural integrity.

Heat Treatment States

TJC Steel Group offers A387Gr12CL2 steel plates in various heat treatment states to suit customer requirements:

- Normalized (N)

- Normalized and Tempered (NT)

- Quenched and Tempered (QT)

The selection of heat treatment state depends on the specific application and desired properties.

Size Range

TJC Steel Group caters to a diverse range of size requirements, ensuring that A387Gr12CL2 steel plates are available in custom dimensions to suit any project. Typical size ranges include:

- Thickness: 8 mm - 700 mm

- Width: 1500 mm - 4020 mm

- Length: 3000 mm - 27000 mm

Impact Testing

Impact testing is a crucial aspect of ensuring the quality and safety of A387Gr12CL2 steel plates. The Charpy V-Notch impact test is performed to assess the material's resistance to sudden loading and fracture at low temperatures. The high impact energy values demonstrated by A387Gr12CL2 ensure excellent toughness and resistance to brittle fracture.

Main Applications

A387Gr12CL2 steel plates find widespread use in various industries, including:

- Petroleum

- Chemical processing

- Power generation

- Boiler manufacturing

They are commonly employed in the construction of reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, boiler drums, liquefied petroleum gas bottles, hydropower station high-pressure water pipes, and turbine volutes.

TJC Steel Group Supply Cases

TJC Steel Group, with its vast experience and expertise in the steel industry, has successfully supplied A387Gr12CL2 steel plates to numerous prestigious projects worldwide. Some notable cases include:

- Supplying custom-sized A387Gr12CL2 plates for the construction of large-scale reactors in a leading petrochemical plant.