Stainless steel tableware is a product that is often used in everyone’s life. Many people often hear the title codes for stainless steel such as 304 and 430, but they don’t quite understand the meaning of these codes. Indeed, these codes do not intuitively represent various types of stainless steel products. For detailed information, in practice, there is a digital representation that can better reflect product information, that is, the chromium-nickel content. For example, 18-8 (that is, the 304 model) represents that the stainless steel material contains 18% chromium and 8% nickel, of which chromium Anti-oxidation and rust, nickel is anti-corrosion of chemical media, and iron is of course the foundation of stainless steel. The following digital methods are used to illustrate the difference between various stainless steel tableware. 1. 430 (18-0) stainless steel: when the chromium content in stainless steel reaches more than 12%, it can well avoid oxidation and rust caused by the natural environment, and 403 stainless steel tableware with a chromium content of 18% is a more reasonable ratio. Anti-rust products, but because this model does not contain nickel, the ability to resist chemical medium corrosion is relatively weak, so 430 stainless steel is mostly used...
First, pay attention to the impact of macro policies and changes in industrial policies.The domestic market price of 304 stainless steel tube, with the policy changes lead to market price turning as the main line, with the basic changes in supply and demand to determine the trend as the direction.Therefore, to pay special attention to macro policy, monetary policy, industrial policy changes, including 304 stainless steel pipe including the entire stainless steel market.
Stainless steel tube manufacturers are optimistic about the future of the industry.Due to its safety, reliability, health and environmental protection, economical application and high cost performance, stainless steel tubes have many other non-replaceable advantages.There will be more and more applications in engineering, usage will become more and more popular, and pipes will be added.
The reason for the rust of the 304 stainless steel pipe is that the surface of the stainless steel has a chromium-rich oxide film (protective film) to prevent the penetration and oxidation of oxygen atoms, thereby obtaining corrosion resistance. Once for some reason, this film is continuously destroyed, the oxygen atoms in the air or liquid will continue to penetrate or the iron atoms in the metal will continue to separate out, forming loose iron oxide, and the metal surface will continue to rust. The alloy without solution treatment will not dissolve into the matrix, resulting in a low content of matrix alloy.
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