Stainless steel by the internal atomic structure arrangement, can be divided into: the body heart cubic lattice structure (martensite), face centered cubic lattice structure (austenite) and dense row six square lattice structure (Tie Suti).

The austenite itself is not magnetic, but the weight of mechanical processing is the fundamental cause of the magnetic size, but does not affect the corrosion resistance and other quality of stainless steel.

Stainless steel with its beautiful appearance, corrosion resistance, not easy to damage the advantages, more and more people's favorite. More and more pots, city sculpture, architecture, etc. the use of stainless steel decoration room. A few days ago, I saw a customer to buy stainless steel kitchen utensils, took the magnet on the stainless steel utensils to absorb. I asked him why he used a magnet. He said that the magnet is not on the absorption of iron, stainless steel, stainless steel is not magnetic. It seems that people's understanding of stainless steel.

Such a practice is not scientific and is extremely wrong.

Currently the world has been the development and application of five kinds of stainless steel, only austenitic stainless steel (many 300 grade series, series 200 grade) without processing (magnetic or weak magnetic), and ferritic stainless steel (many 400 series brand), double phase stainless steel, martensite stainless steel, precipitation hardening stainless steel with magnetic.

300 series austenitic stainless steel application is most widely used, and modern iron magnetic element type stainless steel proportion is higher and higher, in the field of kitchenware products, household electric appliances, decoration, automobile exhaust system, petrochemical, and other civil and industrial can partly replace 300 series austenitic stainless steel.

For the 200 series magnet "ceiling" of austenitic stainless steel, with manganese and nitrogen to replace nickel, than the corresponding 300 series steel reduces the cost, improves the strength, but because of its corrosion resistance decreased, making its application field is narrow, often is the requirements of high strength, no magnetic and corrosion resistance requirements is not high, such as spring, electronic equipment, etc..

And the so-called "200 stainless steel", which is prevalent in the Chinese market, has the ability to bear the corrosion resistance and the use value is lower. These products no in accordance with the existing national standards for production, but according to the very strict enterprise standard reduces the nickel and chromium content in steel, manganese content increased, some of them even nickel dropped to below 1%, Cr dropped to below 10%, manganese increases to more than 14%, the pitting when rate is very low, far below the corresponding national standards. From the corrosion resistance, these products can not even be called stainless steel, it is not known as the 200 series stainless steel. But it is also the same as the 300 austenitic stainless steel, it is precisely the non magnetic austenitic steel!

It can be said, in the current Chinese market the magnet to the advantages and disadvantages of differential stainless steel, tend to tolerate shoddy stainless steel, and the repulsion of the quality of magnetic ferrite steels.

Iron and steel are different from the amount of carbon. The iron carbon alloy containing the amount of carbon in 2% is steel, and the carbon content of the steel is more than 2%. Steel is widely used because it has both flexibility and rigidity. Touch in life are steel, but they are different names. For stainless steel, regardless of whether the magnet or not, as long as it meets the quality standards, are stainless steel. Therefore, from the perspective of metallurgy said, no rust said. Stainless steel corrosion resistance of the main elements are chromium. Chromium element content in 10.5% or more of the steel will not rust. When the alloy elements are added to the smelting process, there is a difference between the magnet and the magnet. Stainless steel generally by the structure of the organization, can be divided into austenite, ferrite, martensite, and other major categories. If into the molten steel joined the different proportion of chromium and nickel, tempered austenite steel is magnet not so; if chromium and small amount of Ni (with or without nickel) is added into the molten steel, tempered steel is a magnet ceiling on stainless steel, also called ferritic stainless steel; martensitic stainless steel alloy element chromium, iron and carbon. Stainless steel with different content of different types of 100 kinds of. In addition to the austenitic stainless steel magnet is outer, ferrite, martensite stainless steel are magnetic.

Nickel element in the world, the amount of storage is very small, the price is more expensive. Therefore, the high nickel stainless steel in the market price is also higher, and the magnet is not yet. In fact, there is a kind of stainless steel is not a magnet. That is the high manganese containing less or no nickel containing stainless steel. The stainless steel market price is 1000 yuan per ton lower than the high nickel stainless steel. Some dealers is the use of people "good steel magnet are ceiling of misunderstanding, deceive consumers, price and high with stainless steel as expensive.