The ASTM A516 Grade 450 steel plate, also known as A516Gr.450 or A516Gr450, is a carbon steel plate designed specifically for use in pressure vessels and boilers. Its unique chemical composition and mechanical properties enable it to withstand high temperatures and pressures, making it an essential material in various industrial applications.

Chemical Composition

The A516 Grade 450 steel plate boasts a balanced chemical composition that contributes to its exceptional performance. The carbon content ranges from 0.21% to 0.26%, ensuring sufficient strength and ductility. The manganese content falls between 0.85% and 1.20%, which improves the hardenability and wear resistance of the steel. Silicon content is typically between 0.13% and 0.45%, enhancing the heat resistance. Phosphorus and sulfur content are strictly controlled at 0.035% maximum, minimizing the risk of brittleness and embrittlement.

Mechanical Properties

The A516 Grade 450 steel plate exhibits impressive mechanical properties. It has a minimum tensile strength of 450-585 MPa and a minimum yield strength of 240 MPa. The elongation at break is at least 23% for a 50mm gauge length, indicating excellent ductility. These properties ensure the steel plate can withstand the rigorous demands of pressure vessel and boiler applications.

Heat Treatment

The A516 Grade 450 steel plate is typically supplied in a hot-rolled condition, which provides the initial mechanical properties. However, it can also be subjected to additional heat treatments such as normalizing or quenching and tempering to further enhance its performance. These heat treatments modify the microstructure of the steel, optimizing its strength, ductility, and toughness.

Dimensional Range

The A516 Grade 450 steel plate is available in a wide range of dimensions to meet various application requirements. The thickness can vary from 6mm to 205mm, while the width and length are typically customized according to customer specifications. Standard sizes are also available for quick delivery.

Impact Testing

To ensure the A516 Grade 450 steel plate can withstand low-temperature conditions, it undergoes rigorous impact testing. This testing involves striking a notched specimen with a pendulum-type hammer at subzero temperatures and measuring the energy absorbed during fracture. The steel plate must meet specified impact energy requirements to be deemed suitable for low-temperature applications.

Main Applications

The A516 Grade 450 steel plate finds widespread application in the manufacture of pressure vessels and boilers. It is commonly used in the petrochemical, refining, power generation, and chemical processing industries. The steel plate's excellent strength, ductility, and heat resistance make it ideal for fabricating boilers, heat exchangers, reactors, and other equipment that operates under high temperatures and pressures.

TJC Steel Group Supply Case

At TJC Steel Group, we have a rich history of supplying A516 Grade 450 steel plate to customers worldwide. Our team of experts ensures that each plate meets the stringent standards set by ASTM A516/A516M, guaranteeing its quality and performance. We have supplied this material for various applications, including the construction of boilers for power plants and the fabrication of pressure vessels for the oil and gas industry. Our customers trust us to provide reliable, high-quality steel plate solutions that meet their specific needs.