A517GrQ/A517 Grade Q steel plates 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.
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.
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
