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201 is composed of 17Cr-4.5Ni-6Mn-N, which is a Ni steel grade and a substitute for 301 steel. After cold processing, it has magnetism and is used in railway vehicles.
201 stainless steel material has certain acid and alkali resistance properties, high density, polishing without bubbles, and needle holes. It is a high-quality material for producing various watch cases, watch straps, and bottom covers. Mainly used for decorative pipes, industrial pipes, and some shallow stretched products.
201 Chemical Composition Standard for Stainless Steel
(C) Carbon: ≤ 0.15, (Si) Silicon: ≤ 1.00, (Mn) Manganese: 5.5-7.50
(Cr) Chromium: 16.0~18.0, (N) Nitrogen: ≤ 0.25, (P) Phosphorus: ≤ 0.060
(S) Sulfur: ≤ 0.030, (Ni) Nickel: 3.5-5.5