What chemical elements does 201 stainless steel pipe contain?
What chemical elements does 201 stainless steel pipe contain? 2019-08-29 Recently, someone consulted the customer service of the 201 stainless steel tube manufacturer on the Internet, asking what elements the 201 stainless steel tube contains, and what are the functions of the various elements? It can be seen that although the stainless steel tube has been developed as a decorative tube in my country for a long time , But in fact, there are still many people who don’t understand it very well. The editor will give you a simple science popularization today. Chemical composition of 201 stainless steel pipe: (Cr) Chromium: 13.50～15.0 (Ni) Nickel: 1.02-1.28% (C) Carbon: ≤0.15 (Si) Silicon: ≤0.75 (Cu) Copper: Half copper 0.8% High copper 1.5% (Mn) Manganese: 5.5～7.50 (N) Nitrogen: ≤0.25 (P) Phosphorus: ≤0.060 (S) Sulfur: ≤0.030 Density of stainless steel: 7.93g/cm3 The content of is briefly introduced to you the role of each element. 201 stainless steel pipe contains more than 13% chromium. Through the passivation of chromium, 201 stainless steel pipe has anti-corrosion and anti-oxidation properties. In fact, most people don't know that the main ingredient of stainless steel is iron. There is only one element that determines the properties of stainless steel, and that is chromium. The addition of chromium as an alloying element in stainless steel promotes the development of its internal molecular motion to help resist oxidation damage. Therefore, the content of chromium determines the oxidation resistance of stainless steel. The content of chromium in 201 stainless steel pipe is 13.2-14.5%. The main function of chromium in stainless steel is to resist oxidation. There is also an element called nickel. The content of nickel in stainless steel is 1.01-1.28%, and the role of nickel in stainless steel can only be brought into play with chromium. Nickel is an excellent corrosion-resistant material and an important alloying element of alloy steel. The role of nickel and chromium in stainless steel is to change the structure of high chromium steel, thereby greatly improving the corrosion resistance and process performance of stainless steel. That is to say, the combination of nickel and chromium mainly plays a role in corrosion resistance. In addition, pipes of the same thickness are relatively soft, because the copper content of stainless steel is relatively high, its copper content is 0.83-1.15%, and the carbon content of 201 stainless steel pipe is relatively low, as low as 0.05%. Only pipes with a large carbon content and no copper will be harder, but a large carbon content will easily rust. Increasing the content of copper in stainless steel can also make the passive film on the surface of stainless steel rich in copper chloride. Copper chloride does not easily interact with the acid and alkali salts in the environment, which can greatly improve the corrosion resistance of stainless steel, especially for dilute Acid has a strong anti-acid capacity, and the precipitated copper ions also have a sterilizing effect. Therefore, the corrosion resistance and bending properties of stainless steel are much stronger than some stainless steel products on the market. There is another element called manganese. Manganese has a degaussing effect, and its main function is to eliminate the harmfulness of sulfur in stainless steel. In fact, consumers do not pay much attention to the content of each element in 201 stainless steel pipe. What consumers want is high-quality and cheap stainless steel decorative pipe. 201 stainless steel pipes are mostly used in architectural decoration, metal brackets and other places, and the performance requirements are not high. If you want better quality stainless steel pipes, it is recommended that you buy 304 stainless steel pipes.