200 series stainless steel was first developed as a substitute for 300 series stainless steel during World War II. At that time, nickel, as a strategic material, was strictly controlled by the relevant countries due to the war. In order to solve the problem of stainless steel production and supply in the case of serious shortage of nickel supply, this new austenitic stainless steel series with manganese instead of nickel was produced. The density of 201 stainless steel is 7.93g/cm3. It has certain acid and alkali resistance, high density, no bubbles and pinholes in polishing. It is mainly used for decorative tubes, industrial tubes and some shallow stretched products.
201 stainless steel is popular because of it’s acid resistance, alkali resistance, high density and no pinholes. It is widely used in watch bands and cases. It is wear-resistant and scratch resistant. There are also common decorative areas, such as stainless steel anti-theft windows, stainless steel guardrails, stainless steel handrails, etc., most of which are made of 201 material. 201 is also used in some industries. However, because of its low nickel content and low price, 201 is not particularly good at rust prevention, so its application field will be restricted.
201 stainless steel will rust in specific environment. For example, it will rust when immersed in salt water, but it is very difficult to rust in daily environment. Stainless steel is not easy to rust because it contains nickel. Compared with 304 stainless steel, 201 stainless steel has less nickel, so it is easier to rust than 304 stainless steel.Stainless steel coil and stainless steel plate are rolled under the recrystallization temperature at room temperature. Compared with hot rolled strip, it has high dimensional accuracy, low surface roughness, good surface quality, bright and clean, and high strength. Cold rolled stainless steel sheet is a kind of stainless steel sheet produced by cold rolling process.
Cold rolled stainless steel strip can be divided into austenite type, austenite ferrite type, duplex type, martensite type and precipitation hardening type according to its structural characteristics, which can be selected when used. It is applicable to electrical appliances, stainless steel kitchenware, hardware products, floor springs, sanitary ware, chemical industry, petroleum, pipe making, cable wrapping, medical treatment, bending and flanging, mechanical equipment manufacturing, building decoration and other industries. Hard state is applicable to stainless steel industries such as electronics, electrical appliances, computers, high-tech product parts, adjusting gaskets, metal stamping parts, spring shrapnel, etc
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