The ASTM A516 Grade 380 steel plate, also known as A516Gr.380 or A516Gr380, is a high-strength carbon steel specifically designed for use in pressure vessels and boilers. This steel grade offers excellent mechanical properties and welding capabilities, making it a preferred choice for various industrial applications.

Chemical Composition

The chemical composition of ASTM A516 Grade 380 steel plate is carefully controlled to ensure optimal performance. The main elements that comprise this steel grade include carbon (C), manganese (Mn), silicon (Si), phosphorus (P), and sulfur (S). The carbon content is typically limited to 0.18-0.25%, while the manganese content ranges from 0.55-0.98%. The silicon content is limited to 0.13-0.45%, and both phosphorus and sulfur are restricted to a maximum of 0.035%.

Mechanical Properties

ASTM A516 Grade 380 steel plate possesses excellent mechanical properties, including high tensile strength and yield strength. The tensile strength ranges from 380 to 515 MPa, while the yield strength is specified at a minimum of 205 MPa. The steel also exhibits good ductility, with an elongation rate of at least 27% when tested with a 50 mm gauge length.

Heat Treatment

ASTM A516 Grade 380 steel plate is typically supplied in a controlled-rolled or normalized condition. This heat treatment ensures that the steel achieves its desired mechanical properties while maintaining good toughness and ductility. The steel can also be further heat-treated, such as through quenching and tempering, to achieve specific performance requirements.

Size Range

ASTM A516 Grade 380 steel plate is available in a wide range of thicknesses, typically ranging from 6 mm to 120 mm. The plate can also be customized to specific dimensions based on customer requirements. Standard widths range from 1000 mm to 4000 mm, while lengths can be up to 18000 mm.

Impact Testing

ASTM A516 Grade 380 steel plate is subject to impact testing to ensure its resistance to low-temperature brittleness. This testing involves evaluating the steel's ability to withstand sudden impacts at specific temperatures, such as -20°C or -40°C. The steel must meet specific energy absorption requirements to pass these tests.

Primary Applications

ASTM A516 Grade 380 steel plate is widely used in the manufacture of pressure vessels and boilers, particularly those operating at moderate to high temperatures and pressures. The steel's excellent mechanical properties and welding capabilities make it suitable for various components, including shells, heads, tubesheets, and other critical parts. It is also used in other applications requiring high-strength carbon steel, such as construction, mechanical engineering, and shipbuilding.

TJC Steel Group Supply Cases

TJC Steel Group is a leading supplier of ASTM A516 Grade 380 steel plate, with a robust inventory and extensive experience in meeting customer needs. We have successfully supplied this steel grade to various industries, including power generation, petrochemical, and oil and gas. Our products have been used in the construction of boilers, pressure vessels, heat exchangers, and other critical equipment, contributing to the safe and efficient operation of these facilities.