A516 Gr 70 steel plate is hot rolled plate. And A516 Gr 70N steel plate, N indicates that it is a normalizing plate, that is, an additional normalizing heat treatment. In contrast, normalizing is for grain refinement and homogenization of carbide distribution, removal of internal stress and reduction of hardness of steel materials. The toughness of A516 Gr 70 steel plate will be improved after normalizing, so the low temperature performance will be improved. The overall performance has been improved and the A516 Gr 70N steel plate price has been higher.
The A516 Gr 70 steel plate and A516 Gr 70N steel plate are mainly used in petroleum, chemical industry, power station, boiler and other industries. They are used to make reactor, heat exchanger, separator, spherical tank, gas tank, liquefied gas tank, nuclear reactor pressure shell, boiler drum, liquefied petroleum gas cylinder, high pressure water pipe of hydropower station, water wheel vortex shell and other equipment and components.
Fore more information about ASTM A516 pressure vessel steel grades: A516 grade 55, A516 gr 60, A516 grade 65, A516 grade 70, please consult BBN steel directly.
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