TJC Steel Group is proud to introduce the A514GrJ/A514 Grade J high-strength alloy steel plate, a premium material renowned for its exceptional mechanical properties and wide-ranging applications. This steel plate undergoes a rigorous quenching and tempering heat treatment process, resulting in unparalleled strength, toughness, and durability. This article delves into the detailed chemical composition, mechanical properties, heat treatment state, producible size range, low-temperature impact testing, primary applications, and relevant supply cases from TJC Steel Group.

Chemical Composition:

The A514GrJ/A514 Grade J steel plate boasts a precisely balanced chemical composition that ensures its superior performance. The primary elements include:

- Carbon (C): ≤ 0.20%

- Silicon (Si): ≤ 0.35%

- Manganese (Mn): 1.20% - 1.70%

- Phosphorus (P): ≤ 0.025%

- Sulfur (S): ≤ 0.005%

Additionally, it incorporates small amounts of alloying elements such as chromium (Cr), nickel (Ni), molybdenum (Mo), vanadium (V), and titanium (Ti), further enhancing its corrosion resistance, strength, and weldability.

Mechanical Properties:

The mechanical properties of A514GrJ/A514 Grade J steel plate are truly impressive, making it ideal for demanding applications. Key properties include:

- Tensile Strength: 1860 MPa to 2410 MPa, depending on the delivery condition and processing

- Yield Strength: 1400 MPa to 1800 MPa, influenced by the same factors

- Elongation: 18% to 21%, indicating excellent ductility and toughness

- Impact Energy: Above 60J, ensuring high toughness even at low temperatures

Heat Treatment State:

The A514GrJ/A514 Grade J steel plate is delivered in a quenched and tempered (Q+T) condition, a critical step in achieving its outstanding mechanical properties. The quenching process involves heating the steel to a temperature not less than 900°C followed by rapid cooling in water or oil. The tempering step, conducted at a temperature not less than 620°C, eliminates internal stresses and enhances toughness.

Producible Size Range:

TJC Steel Group offers A514GrJ/A514 Grade J steel plates in a versatile range of dimensions to suit various project requirements. Typical sizes include:

- Thickness: 8mm to 150mm

- Width: 1600mm to 3900mm

- Length: 6000mm to 14000mm

Custom sizes and cutting services are also available upon request.

Low-Temperature Impact Testing:

A514GrJ/A514 Grade J steel plate undergoes rigorous low-temperature impact testing to ensure its performance in extreme conditions. The high impact energy values demonstrate its ability to withstand severe loads and maintain structural integrity even at subzero temperatures.

Primary Applications:

Thanks to its exceptional properties, A514GrJ/A514 Grade J steel plate finds widespread applications across diverse industries:

- Mining Machinery: Used in the construction of heavy-duty equipment such as dump trucks, loaders, and hydraulic supports, where its high strength and wear resistance significantly extend equipment life.

- Petrochemical Industry: Ideal for fabricating reactors, vessels, and pipelines due to its exceptional corrosion resistance and ability to withstand high pressures and temperatures.

- Bridge Construction: Employed in the critical components of bridges, including load-bearing structures and decks, enhancing their load-carrying capacity and durability.

- Shipbuilding and Marine Engineering: Vital in the creation of offshore platforms, drilling rigs, and other marine structures, thanks to its superior corrosion resistance and impact toughness.

TJC Steel Group Supply Cases:

TJC Steel Group has a proven track record of supplying A514GrJ/A514 Grade J steel plates to prestigious projects worldwide. A notable example is the successful delivery of steel plates for the construction of a massive offshore oil platform in the Gulf of Mexico. The plates' exceptional strength, toughness, and corrosion resistance were instrumental in ensuring the platform's safety and longevity.