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Is 20 1 cold rolled sheet annealed?

The 20 1 cold rolled stainless steel plate must undergo heat treatment such as annealing, solution treatment and aging treatment before leaving the factory. The corrosion resistance of stainless steel mainly depends on the alloy composition (chromium, nickel, titanium, silicon, aluminum, etc. ) and internal structure. Cold-rolled steel plate is the abbreviation of common carbon structural steel cold-rolled sheet, also known as cold-rolled plate, commonly known as cold plate.