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SA516Gr70 steel Vs SA516Gr70N steel steel plate

Difference between SA516Gr70 steel and SA516Gr70N steel
SA516Gr70 steel is a hot-rolled plate. As for steel SA516Gr70N, N indicates that it is a normalizing plate, which is an additional normalizing heat treatment. In comparison, normalizing is for grain refinement and uniform carbide distribution, removing internal stress of the material and reducing The hardness of the material. The toughness of the material will increase, which will improve the low temperature performance. The overall performance has been improved, and the price is also more expensive. SA516Gr70N steel plate is a normalized medium and low temperature pressure vessel. SA516Gr70, similar to A516Gr70 steel, is a brand name without specifying a specific heat treatment process.
 
SA516Gr70 hot-rolled sheet is mainly used in petroleum, chemical, power station, boiler and other industries. Liquefied petroleum gas cylinders, high-pressure water pipes of hydropower stations, turbine volutes and other equipment and components.
 
SA516Gr70 plate manufacturing steelmaking process: SA516Gr70 steel should be killed steel and should meet the fine austenite grain size requirements in the A20 / A20M standard.
 
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