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200 Series J1 J3 Stainless Steel Sheet Metal 2B Cold Rolled Finish Stainless Steel Sheet metal 4x8'
There are mainly the following kinds of 200 series steel: J1, J3, J4, 201,202. Later, 200 steel with lower nickel content control appeared. As for 201C, it was the extension of 201 steel developed by individual steel mills in China in the later period. The national standard grade of 201 is: The old grade 1Cr17Mn6Ni5N, the new grade: 12Cr17Mn6Ni5N 201C continues to reduce the nickel content and increase the manganese content on the basis of 201.