What is a387 plate？

A387 plate refers to a type of high-strength low-alloy (HSLA) steel plate that is primarily used in the construction of pressure vessels and boilers. It is also known as ASTM A387 plate or ASME SA387 plate, as it is produced and certified to the specifications set forth by the American Society for Testing and Materials (ASTM) and the American Society of Mechanical Engineers (ASME).

ASTM A387 plate is available in various grades, each with different levels of strength, toughness, and corrosion resistance. The most commonly used grades are A387 Grade 11, Grade 12, Grade 22, and Grade 91. These alloy plates are typically made by melting and casting the steel, followed by rolling or forging it into the desired thickness and shape. The finished A387 Chrome Moly Plate is then heat-treated to enhance its properties and ensure that it meets the required specifications for use in pressure vessels and boilers.

A387 Gr.5 plate refers to a specific type of high-strength low-alloy (HSLA) steel plate that is produced and certified to the ASTM A387 Grade 5 specification. This alloy plate is primarily used in the construction of pressure vessels and boilers, where high-temperature and high-pressure resistance is required.

SA 387 GR 11 plate has a minimum tensile strength of 415-585 MPa (60-85 ksi) and a minimum yield strength of 240 MPa (35 ksi). It also has good corrosion resistance and is resistant to hydrogen embrittlement, making it suitable for use in harsh environments.

The composition of A387 Gr.22 boiler plate typically includes chromium, molybdenum, and sometimes vanadium, which provide excellent heat resistance and enhance its mechanical properties. The SA 387 GR 22 plate is typically produced by melting and casting the steel, followed by rolling or forging it into the desired thickness and shape.

The composition of A387 Gr.91 pressure vessel plate typically includes chromium, molybdenum, and vanadium, which provide excellent heat resistance and enhance its mechanical properties. The SA 387 GR 91 plate is typically produced by melting and casting the steel, followed by rolling or forging it into the desired thickness and shape.

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