316 stainless steel seamless pipe

316 stainless steel seamless pipe is a special pipe made of the most common stainless steel material. Stainless steel We all know that its anti-corrosion ability is very excellent, and the equipment in some chemical sites is basically made of stainless steel, but Xiaobian recently saw a lot of friends ask, why 316 stainless steel seamless pipe will rust? In fact, the corrosion resistance of stainless steel seamless pipe is good, which does not mean that it will never rust.

The biggest difference in the chemical composition of the two most commonly used stainless steel seamless pipes 304, 316, 316 and 304 is that they are highly corrosive at 304 and higher temperatures. Therefore, stainless steel seamless pipes of 316 material are often used in high temperature environments.

But there is no such thing as positivity. Even at very high temperatures, 316 is not used in concentrated sulfuric acid environments. Everyone who has studied this machine has learned the screws, but you need to apply black solid lubricant to prevent death in the heat. Molybdenum forms sulfide by a simple and expensive reaction of sulfur ions. Therefore, there is no stainless steel seamless tube.

When the appearance of the 316 stainless steel seamless pipe appeared brown spots, everyone was very surprised. 316 stainless steel is not rust 316 stainless steel. Steel pipes can be steel. In fact, it is a single face to face defect known in 316 stainless steel seamless pipe. Stainless steel will rust under certain conditions. Why can 316 stainless steel seamless pipe rust?

316 stainless steel seamless tube is an ultra-thin, high-density, stable chromate film, formed by its appearance, to avoid the continuous oxidation of oxygen atoms, to obtain anti-rust talent, and formed by its appearance. For some reason, this film is constantly being destroyed, the oxygen atoms in the air and liquid are constantly separating, forming a sparse iron oxide, and the appearance of the metal is always rusty.

316 stainless steel seamless pipe has the ability to resist atmospheric oxidation. That is, it does not rust and has corrosion resistance to media containing acid, alkali and salt. That is, corrosion resistance. However, oxidation resistance varies depending on the chemical composition and environment. Although the corrosion resistance in the dry cleaning atmosphere is the same as the corrosion resistance in 304, it will move towards the coastal zone and rust immediately in the sea fog containing many salts. On the other hand, 316 stainless steel seamless pipe is excellent. So it’s not any stainless steel, it’s always corrosion resistant and doesn’t rust.