Can this steel plate withstand temperatures of 300–400°? What type of welding rod should be used, and are there any standard specifications to refer to?
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I would like to know whether steel plates with the specification SA-516-Gr-70N can be used for cold molten salt storage tanks and hot molten salt storage tanks, and whether they can withstand temperatures of 300–400°. What type of welding electrodes should be used, and are there any standard specifications to refer to? Thank you, Haiyou
This post was last edited by Shutong on 2021-1-24 at 23:25. This steel plate is manufactured in accordance with ASTM standards; the letter N in SA516Gr70N denotes a carbon steel plate for medium and low temperature pressure vessels. The SA516Gr70 steel plate undergoes an additional normalizing process. Main applications of SA516Gr70: It is used in industries such as petroleum, chemicals, power plants, and boilers for manufacturing equipment and components including reactors, heat exchangers, separators, spherical tanks, gas tanks, liquefied gas tanks, pressure vessels for nuclear reactors, boiler drum, liquefied petroleum gas cylinders, high-pressure water pipes in hydroelectric stations, and turbine casings. The welding electrode should be AWS E7018-1, which is also known as J506Fe-1, a low-hydrogen flux-cored welding electrode.
Are there any standards? Where can I find them? Can a storage tank withstand high temperatures of 300-400 degrees?
300-400° is no problem. Please check the ASTM standards; I don’t have them here
I just saw that the material mentioned by the teacher is already included in China’s steel standards; it appears in Amendment No. 1 to Part 2 of GB150, the standards for pressure vessels. The material in question cannot be used in temperature ranges of 300–400 degrees, as it is a type of low-alloy steel. It’s equivalent to Q345R, I guess.