In the realm of industrial steel products, the A387Gr22LCL1/A387 Grade 22L Class 1 chromium-molybdenum alloy steel plate stands out as a premium material designed specifically for pressure vessels and boilers operating under demanding conditions. Manufactured in compliance with the rigorous ASTM A387/A387M standards, this steel plate offers a unique blend of exceptional mechanical properties, chemical composition, and versatility, making it an ideal choice for various industrial applications.

Chemical Composition

The A387Gr22LCL1/A387 Grade 22L Class 1 steel plate boasts a well-balanced chemical composition that enhances its overall performance. Key elements in its makeup include:

- Carbon (C): ≤ 0.15%, which contributes to the steel's strength and hardness.

- Manganese (Mn): 0.30-0.60%, enhancing the steel's toughness and wear resistance.

- Silicon (Si): ≤ 0.50%, aiding in deoxidation and improving the overall mechanical properties.

- Phosphorus (P) and Sulfur (S): Both controlled at ≤ 0.025% and ≤ 0.035% respectively, minimizing detrimental effects on steel performance.

- Chromium (Cr): 2.00-2.50%, a crucial alloy element that significantly improves corrosion resistance and oxidation resistance.

- Molybdenum (Mo): 0.90-1.10%, essential for enhancing the steel's high-temperature strength and creep resistance.

Mechanical Properties

The mechanical properties of A387Gr22LCL1/A387 Grade 22L Class 1 steel plate ensure its reliability in high-stress environments. Key mechanical properties include:

- Tensile Strength: Typically ranging from 515 to 690 MPa, ensuring exceptional strength under tension.

- Yield Strength: ≥ 310 MPa, providing ample resistance to deformation under load.

- Elongation (A%): ≥ 18%, indicating good ductility and the ability to absorb energy without fracturing.

- Reduction of Area (Z%): ≥ 40%, further confirming the material's toughness and ability to withstand impact.

Heat Treatment State

The A387Gr22LCL1/A387 Grade 22L Class 1 steel plate is typically supplied in a normalized and tempered condition, ensuring optimal mechanical properties and weldability. The heat treatment process involves normalizing the steel to improve its microstructure and then tempering it to reduce internal stresses and enhance toughness.

Size Range

This steel plate is available in a wide range of sizes to meet various industrial needs. The thickness can range from 6 mm to 100 mm, while the width can extend from 1500 mm to 4000 mm, catering to diverse applications and specifications.

Impact Testing

To ensure the steel's ability to withstand sudden impacts, A387Gr22LCL1/A387 Grade 22L Class 1 steel plates undergo rigorous impact testing. These tests are conducted at various temperatures to assess the material's toughness and resistance to fracture under impact loading.

Main Application Scenarios

Thanks to its exceptional properties, A387Gr22LCL1/A387 Grade 22L Class 1 steel plate finds widespread use in various industries:

1. Petroleum and Natural Gas Industry: Used in reactors, heat exchangers, separators, pipelines, and other pressure vessels, where high temperatures and pressures are common.

2. Power Generation: Essential in the construction of boilers, superheaters, reheaters, and steam pipelines in thermal power stations.

3. Chemical Industry: Employed in the manufacture of reactors, distillation columns, storage tanks, and other equipment that operate under extreme conditions.

4. Nuclear Energy: Suitable for components in nuclear reactors that must endure high temperatures and radiation.

5. Marine and Offshore Engineering: Utilized in the construction of offshore platforms, ships, and other marine structures requiring high-performance steel.