According to the market forecast released by Eurofer on August 5, the output of all A573 Gr 70 carbon steel plate steel consumption industries in the European Union will drop by 12.8% in 2020, and rise by 8.9% in 2021. However, the European Union said that the government's "awesome strength" support will reduce the A573 Gr 70 carbon steel plate steel consumption intensity in the construction industry significantly less than other industries.
Corrosion resistance of stainless steel mainly owes to the formation of a very thin, adhesive and translucent chromium oxide film on the surface of stainless steel. Once the film is damaged, the chromium in the stainless steel will react with oxygen in the atmosphere to restore the film quickly. At the same time, the mechanical damage can also generate a protective film quickly to prevent the A573 Gr 70 carbon steel plate, stainless steel from corrosion.
Difference between Q235A steel and Q235B steel plates: in the national standard GB700, the difference between A573 Gr 70 carbon steel plate, Q235A steel and Q235B steel plates is mainly in the carbon content. In addition, Q235A steel plate does not do impact test, while Q235B Q235B steel plates need normal temperature impact test, V-notch. Relatively speaking, the mechanical properties of Q235B steel plates are better than that of Q235A steel plate.
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