Chemical Composition

The chemical composition of SA612 steel includes high levels of nickel, manganese, and silicon, along with trace amounts of carbon and other elements. Specifically, this steel plate contains 8-9% nickel, 0.50-1.50% manganese, and 0.40-1.00% silicon. The carbon content is kept at a minimum to ensure good weldability and reduce the risk of brittleness.

Mechanical Properties

SA612 steel has a minimum tensile strength of 690 MPa and a minimum yield strength of 415 MPa. The elongation and fracture toughness of this steel are also impressive, making it an excellent material for high-stress applications. Additionally, SA612 steel exhibits good corrosion resistance due to the high levels of nickel and manganese.

Characteristic Features

One of the most notable characteristics of SA612 steel is its strength-to-weight ratio. This steel plate is lightweight yet highly durable, making it an ideal choice for manufacturing pressure vessels and other components that require high strength but also need to be moved easily. Additionally, SA612 requires minimal preheat before welding and exhibits excellent weldability, which minimizes downtime and reduces labor costs.

Applications

SA612 steel is typically used in the construction of low-temperature pressure vessels, such as storage tanks and heat exchangers. Its high strength and low weight make it an ideal choice for use in harsh environments, such as offshore oil and gas drilling platforms. Additionally, SA612 steel is often used in the manufacturing of cryogenic equipment and piping systems.

Conclusion

SA612 steel is a high-strength, low-alloy steel plate that combines impressive mechanical properties with excellent weldability and corrosion resistance. TJC Steel provides this type of steel plate in customizable sizes to fit specific manufacturing needs. With its unique characteristic features, SA612 steel is a popular choice for a wide range of pressure vessel applications.