A517 Grade E is a high-strength quenched and tempered alloy steel plate used in demanding structural applications requiring excellent toughness and weldability. It is commonly specified for heavy machinery, pressure vessels, and components that must withstand extreme loads and harsh environments. Through controlled heat treatment, the steel develops a refined microstructure that provides good fracture resistance and reliable performance even at low temperatures. Its ability to maintain strength and ductility under stress makes it a preferred choice in construction, energy, and manufacturing industries where safety and durability are essential.
Chemical Composition
| MATERIAL | C | Mn | Si | P≤ | S≤ |
| A517GRE | 0.10-0.22 | 0.35-0.78 | 0.08-0.45 | 0.035 | 0.035 |
Mechanical Property
| MATERIAL | Tensile Strength(MPa) | Yield Strength(MPa) MIN | % Elongation MIN |
| A517GRE | 729-930 | 620 | 14 |
processing
Melting and Casting
The process begins with melting carefully selected raw materials in a controlled furnace environment. The chemical composition is closely monitored to achieve the required alloy balance that defines the grade. Once fully melted and homogenized, the steel is cast into ingots or continuous cast slabs, forming the initial semi-finished shape.
Hot Rolling
The slabs are reheated to a precise temperature and then subjected to hot rolling. Multiple passes through rolling mills gradually reduce thickness and shape the material into plates. This stage introduces significant plastic deformation, which refines the grain structure and contributes to the steel's high strength and toughness.
Heat Treatment
After rolling, the plates undergo quenching, where rapid cooling transforms the microstructure into a hard, strong state. This is followed by tempering at a lower temperature to improve toughness, reduce internal stresses, and stabilize the material properties. Strict control of time and temperature ensures consistent performance across the entire plate.
Finishing and Inspection
The final steps include straightening, cleaning, and surface treatment as needed. Comprehensive inspection, such as ultrasonic testing, is performed to detect any internal or surface defects. Only plates that meet the required standards proceed to packaging and shipment.
applications
Heavy Machinery and Equipment
Used in mining machinery, large cranes, and heavy‑duty lifting systems that must withstand dynamic and impact loads during operation.
Pressure Vessels and Storage Tanks
Applied in the energy sector for pressure vessels, storage tanks, and related equipment requiring high strength and good toughness, especially in low‑temperature environments.
Bridges and Structural Construction
Utilized in the fabrication of bridges, building frames, and other structural components where reliable performance under heavy loads is essential.
Offshore and Marine Structures
Selected for offshore platforms, subsea equipment, and marine structures due to its ability to resist harsh environmental conditions and maintain structural integrity.
Transportation Industry
Used in the manufacturing of heavy trucks, specialized vehicles, and rail components where a combination of strength and reduced weight is required.
General Industrial Fabrication
Applied in various industrial machinery and equipment, including processing plants and power generation facilities, where durable and high‑performance steel is needed.
Full specification and details are available on request. The above information is provided for guidance purposes only. For specific design requirements please contact our technical sales staff.
What are the main chemical components of A517GrE?
The main chemical components of A517GrE include carbon (C), manganese (Mn), silicon (Si), chromium (Cr), molybdenum (Mo), and small amounts of phosphorus (P) and sulfur (S), which ensure its mechanical properties.
What is the thickness range of A517GrE plates commonly supplied?
The common thickness range of A517GrE plates is 6-200 mm. Custom thicknesses can be supplied based on specific project requirements, subject to manufacturing feasibility.
Is A517GrE weldable?
Yes, A517GrE has good weldability. Proper preheating and post-weld heat treatment (PWHT) are recommended to avoid weld cracks and ensure the integrity of the welded joint.
What are the surface quality requirements for A517GrE plates?
A517GrE plates must have a clean surface without cracks, scratches, pits, or other defects that could affect performance. Minor defects can be repaired if they meet standard specifications.
Can A517GrE be used in low-temperature environments?
Yes, A517GrE is suitable for low-temperature environments due to its good low-temperature impact toughness. It can work stably at temperatures as low as -20°C (-4°F) without brittle failure.
What machining processes is A517GrE suitable for?
A517GrE is suitable for various machining processes, including turning, milling, drilling, and cutting. Proper cutting tools and parameters are recommended to ensure machining efficiency and surface quality.
What is the recommended preheating temperature for A517GrE welding?
The recommended preheating temperature for A517GrE welding is 150-200°C (302-392°F). This reduces the cooling rate of the weld zone and prevents hydrogen-induced cracking.
What is the minimum tensile strength of A517GrE?
The minimum tensile strength of A517GrE is 690 MPa (100 ksi). This high tensile strength makes it suitable for applications requiring heavy load-bearing and pressure resistance.
What is the yield strength range of A517GrE?
The yield strength range of A517GrE is typically 515-655 MPa (74.7-95 ksi). It provides good ductility and deformation resistance under stress, ensuring structural stability.