A514GrR/A514 Grade R, a premium quenched and tempered high-strength alloy steel plate, stands out for its exceptional mechanical properties and versatility in various industrial applications. Manufactured under the rigorous ASTM A514/A514M standard, this steel plate is designed to meet the demanding requirements of high-stress and high-impact environments. TJC Steel Group, a renowned supplier in the industry, offers A514GrR/A514 Grade R steel plates with precise chemical compositions, impeccable mechanical properties, and tailored dimensions to suit specific project needs.

Chemical Composition:

The chemical composition of A514GrR/A514 Grade R steel plates is meticulously balanced to ensure superior strength and toughness. Key elements include:

- Carbon (C): 0.15-0.23%

- Silicon (Si): ≤ 0.35%

- Manganese (Mn): 1.20-1.70%

- Phosphorus (P): ≤ 0.025%

- Sulfur (S): ≤ 0.005%

Additionally, small amounts of aluminum (Al) and titanium (Ti) are added to enhance corrosion resistance and mechanical properties. This precise blend of elements results in a steel plate with exceptional strength, durability, and weldability.

Mechanical Properties:

A514GrR/A514 Grade R steel plates exhibit remarkable mechanical properties, including:

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

- Yield Strength: 1400-1800 MPa, subject to the same variables

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

- Impact Energy: Over 60J, ensuring high impact resistance even at low temperatures

These properties make A514GrR/A514 Grade R an ideal choice for applications requiring high strength and resilience.

Heat Treatment State:

A514GrR/A514 Grade R steel plates are delivered in the quenched and tempered (Q+T) state. The heat treatment process involves heating the plates to a temperature not less than 900°C for quenching, followed by tempering at a temperature not less than 620°C. This process ensures the steel achieves optimal hardness, strength, and toughness.

Available Sizes and Dimensions:

TJC Steel Group offers A514GrR/A514 Grade R steel plates in a wide range of sizes to meet various project requirements. Typical dimensions include:

- Thickness: 8mm to 200mm

- Width: 1500mm to 2200mm

- Length: 6000mm to 12000mm

Customized sizes are also available upon request to cater to specific application needs.

Low-Temperature Impact Testing:

To ensure reliability in cold environments, A514GrR/A514 Grade R steel plates undergo rigorous low-temperature impact testing. The steel consistently demonstrates high impact energy values, exceeding 60J, even at temperatures as low as -20°C. This ensures the plates maintain their structural integrity under extreme conditions.

Primary Applications:

A514GrR/A514 Grade R steel plates find widespread application in several critical industries:

1. Heavy Machinery: Used in the construction of excavators, loaders, and bulldozers, where high strength and impact resistance are paramount.

2. Bridge Construction: Ideal for bridge beams, trusses, and support structures due to their ability to withstand heavy loads and environmental stresses.

3. Oil and Gas Industry: Employed in the fabrication of offshore platforms, pipelines, and other structures exposed to harsh marine environments.

4. Aerospace: Suitable for aircraft landing gear, engine mounts, and other high-stress components requiring exceptional strength and lightweight design.

5. Construction: Utilized in the creation of high-rise buildings, stadiums, and other large-scale structures that demand exceptional structural integrity.