A517GrQ/A517 Grade Q Quenched and Tempered High-Strength Alloy Steel Plate

​Introduction:
TJC Steel Group is proud to introduce the A517GrQ/A517 Grade Q, a premium high-strength alloy steel plate specifically designed for use in pressure vessels. This steel grade boasts exceptional mechanical properties, meticulous heat treatment processes, and versatile applications, making it an ideal choice for demanding industrial applications.
Chemical Composition:
The A517GrQ/A517 Grade Q steel plate is formulated with a precise blend of elements to ensure optimal performance. Its chemical composition includes:
- Carbon (C): 0.15-0.21%
- Silicon (Si): 0.4-0.8%
- Manganese (Mn): 0.8-1.1%
- Phosphorus (P): ≤ 0.035%
- Sulfur (S): ≤ 0.035%
- Chromium (Cr): 0.5-0.8%
- Molybdenum (Mo): 0.18-0.28%
- Boron (B): ≤ 0.0025%
- Zirconium (Zr): 0.05-0.15%
This balanced composition ensures excellent strength, toughness, and resistance to corrosion and wear.
Mechanical Properties:
The A517GrQ/A517 Grade Q steel plate excels in its mechanical properties, offering:
- Yield Strength: ≥ 510 MPa (Minimum)
- Tensile Strength: 690-930 MPa
- Elongation After Fracture: ≥ 15%
Furthermore, it demonstrates superior quenchability and high-temperature performance, ensuring stability under extreme conditions.
Heat Treatment:
The A517GrQ/A517 Grade Q steel plate undergoes a rigorous heat treatment process to enhance its mechanical properties. The steel is heated to a temperature not lower than 900°C, followed by quenching in water or oil. Subsequently, it is tempered at a temperature not lower than 620°C. This process ensures a homogeneous microstructure and optimal mechanical characteristics.
Available Dimensions:
TJC Steel Group offers A517GrQ/A517 Grade Q steel plates in a wide range of dimensions to meet various project requirements. The plates are available in thicknesses ranging from 8mm to 180mm, widths from 1600mm to 2500mm, and lengths from 6000mm to 12000mm.
Low-Temperature Impact Testing:
To ensure reliable performance in cold environments, A517GrQ/A517 Grade Q steel plates undergo rigorous low-temperature impact testing. This ensures that the steel maintains its strength and toughness even at extremely low temperatures, making it suitable for applications in cold climates.
Primary Applications:
The exceptional properties of A517GrQ/A517 Grade Q steel plates make them ideal for a wide range of applications, including:
- Ocean platform construction
- Mining equipment and machinery
- Heavy-duty construction machinery (e.g., drillers, excavators, loaders, bulldozers)
- Pressure vessels and boilers
- Hydraulic support structures in coal mines
- Various types of cranes and lifting equipment
TJC Steel Group Supply Cases:
TJC Steel Group has a proven track record of supplying A517GrQ/A517 Grade Q steel plates to numerous prestigious projects worldwide. Our clients include leading companies in the oil and gas, mining, and construction industries. One notable example is the supply of A517GrQ steel plates for a major ocean platform construction project, where the plates' exceptional strength and durability contributed significantly to the project's success.
In conclusion, A517GrQ/A517 Grade Q steel plates from TJC Steel Group represent the pinnacle of high-strength alloy steel technology. With their impressive chemical composition, mechanical properties, heat treatment processes, and versatility in applications, these steel plates are the ultimate choice for demanding industrial projects.