A516 Gr.70 steel plate is hot-rolled plate, A516 Gr.70+N steel plate, N means normalizing plate, is an additional normalizing heat treatment. By contrast, normalizing is to refine the grain and carbide distribution uniformity, remove the internal stress of the A516 Gr.70 steel plate, reduce the hardness of the A516 Gr.70 steel plate. The toughness of the A516 Gr.70 steel plate will be improved and the low temperature performance will be improved. The overall performance has improved a little, and the A516 Gr.70+N steel plate price is more expensive.
A516 Gr.70+N steel plate is normalized medium and low temperature pressure vessel, A516 Gr.70 steel plate is the brand name does not say the specific heat treatment process.
A516 Gr.70 steel plate is mainly used in petroleum, chemical, power plant, boiler and other industries. A516 Gr.70 steel plate and and A516 Gr.70+N steel plate are used to make reactor, heat exchanger, separator, spherical tank, no-gas tank, liquefied gas tank, nuclear reactor pressure shell, boiler drum, liquefied petroleum gas bottle, high-pressure water pipe of hydropower station, turbine scroll shell and other equipment and components.
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