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Heat treatment process of ASME SA516 Gr415 vessel plate

Posted:2021-10-21 17:21:25

1. SA516 Gr415 vessel plate is an American standard container plate, which implements the ASME standard. It is commonly used in medium and low temperature pressure vessels. SA516 Gr415 steel plate is widely used in petroleum, chemical industry, power station, boiler and other industries to make reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler drums, and liquefied petroleum equipment and components such as gas cylinders, high-pressure water pipes of hydropower stations, and turbine volutes.

2. Chemical composition of SA516 Gr415 vessel plate:
C≤0.30, Mn: 0.79-1.30, P≤0.035, S: ≤0.035, Si: 0.13-0.45

3. SA516 Gr415 vessel plate heat treatment process:
1) SA516 Gr415, SA516 Gr485, SA516 Gr65, SA516 Gr70 thickness ≤ 1.5in, (40mm) steel plate is usually supplied in rolled state, steel plate can also be ordered by normalizing or stress relief, or normalizing plus stress relief.

2) Thickness>1.5in.(40mm) steel plate should be normalized.

3) Unless otherwise specified by the buyer, the thickness ≤ 1.5in, (40mm) steel plate, when there is a requirement for notch toughness, normalizing should be carried out.

4) If approved by the purchaser, it is allowed to use a cooling rate greater than that in the air to improve toughness, but the SA516 Gr415 vessel plate only needs to be subsequently tempered in the range of 1100-1300°F (595-705℃).