The heat resistance of ASTM A387 Grade 12 Class 1 plate
A387 Grade 12 Class 1 steel plate contains chromium-molybdenum element, so it is also known as chromium-molybdenum alloy steel. It has good resistance to hydrogen corrosion and high temperature. Therefore, it is widely used in oil refining, chemical industry and other hydrogen containing devices and high-temperature equipment.
The elements such as chromium, aluminum to join effectively improves the boiler plate A387 Grade 12 Class 1 high temperature oxidation resistance and high temperature strength, its mechanism is as follows: chromium mainly exist in the cementite (Fe3C), soluble in cementite of chromium, improves the decomposition temperature of carbides and prevents the graphitization, the phenomena of the heat resistance of steel can be improved. Aluminum has a solid solution strengthening effect on ferrite and can also improve the stability of carbide, so it is beneficial to improve the high temperature strength of steel. The addition of vanadium can make A387 Grade 12 Class 1 steel maintain fine grain structure at high temperature and improve the thermal stability and strength of steel.
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