What is the difference between 201 and 304 stainless steel? How to choose the right stainless steel material, let me help you to answer! 304 stainless steel has strong corrosion resistance: the essential difference between 201 and 304 stainless steel is mainly reflected in the different elements contained in the two. The chromium and nickel content of 304 stainless steel far exceeds that of 201 stainless steel, and the corrosion resistance and stamping performance of 304 stainless steel are far better than 201, and 304 stainless steel is generally used in complex environments and requires strong corrosion resistance. It is used in relatively dry environments or places where stainless steel is not required. 201 stainless steel is easy to rust: 201 stainless steel contains high manganese, while the nickel content is very low, the surface is very bright with dark and bright, and the high manganese content is easy to rust. 304 stainless steel is 1.6 times more expensive than 201: 304 stainless steel contains 18 chromium and 8 nickel, while 201 stainless steel has only 12 chromium and less than 1 nickel. The rust prevention and cost of stainless steel are related to chromium and nickel, so the price...
310S (0Cr25Ni20), heat-resistant stainless steel, 310S is austenitic chromium-nickel stainless steel, It has good oxidation resistance and corrosion resistance, because it contains a high percentage of chromium and nickel, It has high creep strength, can work continuously at high temperature, and has good high temperature resistance. Domestic grades: 0Cr25Ni20, 0Cr25Ni20Si2, also known as 2520 US grade: 310S, Creep strength is an indicator of high temperature performance of materials The so-called creep means that under the action of a certain temperature and a small constant external force (tension, pressure, torsion), The phenomenon that the deformation of the material increases gradually with the increase of time. According to its rate, it can be divided into three stages: Deceleration phase 1 • The rate of creep decreases with time. Also known as the transition creep stage, it is essentially a work hardening process. constant speed stage 2 • The creep rate is almost constant, also known as the steady-state creep stage. The steady state creep rate determines the creep life and total elongation. accelerated creep stage 3. Creep rate increases until fracture occurs The fundamental reason that affects the creep process lies in the properties of the material itself. But for the same...
When brown rust spots (spots) appear on the surface of stainless steel pipes, people are amazed: “Stainless steel does not rust, and if it rusts, it is not stainless steel, and there may be a problem with the steel.” In fact, this is a one-sided misconception about the lack of understanding of stainless steel. Stainless steel will also rust under certain conditions! Stainless steel has the ability to resist atmospheric oxidation—that is, rust resistance, and also has the ability to corrode in media containing acids, alkalis, and salts—that is, corrosion resistance. However, the size of its anti-corrosion ability varies with the chemical composition of its steel itself, the state of mutual addition, the conditions of use and the type of environmental media. For example, 304 steel pipe has excellent corrosion resistance in a dry and clean atmosphere, but if it is moved to a coastal area, it will rust soon in the sea fog containing a lot of salt; and 316 steel pipe is good performance. Therefore, it is not any kind of stainless steel that can resist corrosion and rust in any environment. Stainless steel is a very thin, firm, fine and stable chromium-rich oxide film (protective film) formed...
The 2205 duplex stainless steel has a history of 80 years. Nitrogen is added to the 2205 stainless steel to improve the local corrosion resistance. The ferrite and austenite phases in its solid solution structure account for about half, and generally the least phase content is obtained. It also needs to reach 30%, so it has the performance characteristics of ferritic and austenitic stainless steels. Compared with austenitic 316L steel, 2205 duplex stainless steel has the following advantages. 1. The yield strength of 2205 dual-phase steel is more than double that of 316L austenitic stainless steel, and it has sufficient plasticity and toughness required for forming. The wall thickness of the pressure vessel manufactured by the 2205 stainless steel manufacturer is 30-50% lower than that of the 316L stainless steel pipe, which is conducive to reducing costs. 2. 2205 dual-phase steel has excellent resistance to stress corrosion cracking, especially in the marine environment containing chloride ions, stress corrosion is a prominent problem that austenitic stainless steel is difficult to solve. 3. The corrosion resistance of the common 2205 duplex steel in many media is due to the common 316L stainless steel, while the super duplex stainless steel has extremely high...
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