Can a strong magnet stick to stainless steel？

Iron and steel are usually distinguished by the amount of carbon they contain.An iron-carbon alloy with less than 2% carbon is steel, and an alloy with more than 2% carbon is called iron.Steel is widely used because of its toughness, elasticity and rigidity.Life is all steel, but people call it different.For stainless steel, no matter whether the magnet on or not, as long as the quality standards, are stainless steel.Stainless steel is generally divided by the structure of the organization, can be divided into austenite, ferrite, martensite and other categories.

Austenitic stainless steel cannot be hardened and is not suitable for cutting tools and cutting tools.The tool made of martensitic stainless steel can be changed by heat treatment, such as quenching and tempering the hardness of stainless steel."Stainless steel" is just a general name, the standard name is "acid and alkali resistant steel", stainless steel is on the basis of ordinary steel add chromium, nickel and other metal elements and made of steel products, nickel, molybdenum, titanium and other metal elements content is higher, the better the quality of stainless steel.The traditional identification method is to use magnetic suction, the smaller the magnetic quality is the better.Chromium does not contain nickel is chromium stainless steel, chromium nickel stainless steel is not attracted by the magnet, used in the industrial and chemical field, general household appliances such as microwave oven, electric rice cooker, electric water heater, electric water bottle are using chromium stainless steel, can be magnets.All but austenitic stainless steels are magnetic.

How magnets attract

Magnets can suck up a things and get sucked things related to the permeability, and the magnetic permeability and magnetic domain is relevant, the various elements of nature, nickel has the highest permeability, and then the cobalt, again is iron, other materials such as copper also has certain permeability, but is very low, we feel, not the contents of iron can be magnet suck up,Belong to stainless steel alloy on the basis of iron and added chromium and nickel as 1 cr13 is added Cr, 310 stainless steel or Cr25Ni20Si2 is added Cr and Ni and Si, 304 stainless steel is added Cr and Ni and Ti, so they changed the original magnetic domain arrangement, permeability is reduced, and even our hand feel, so we think don't suck. According to the same we can also use alloy to make very high magnetic permeability of the alloy.

There is a lot of testing of stainless steel with magnets.Do not suck no magnetism, think is good, on the contrary, think is counterfeit goods.In fact, this is an unrealistic way to tell.General management of stainless steel materials have been more than 10 years of people know, depending on the traditional magnetic to distinguish stainless steel method, is likely to suffer.According to them, stainless steel variety, room temperature according to the structure of the organization can be divided into austenitic type and martensite or ferritin type.Austenitic or weakly magnetic, martensitic or ferritic magnetic.However, this is not necessarily the case.If usually used for decoration tube plate, austenitic type of material 304, generally speaking is non-magnetic, but due to the chemical composition fluctuations or different processing state may also appear magnetic, which cannot be considered as a fake or unqualified.In addition, 304 stainless steel after cold processing, the structure will also transform to Martensite, the greater the deformation degree of cold processing, the more martensite transformation, the greater the magnetic steel.On the contrary, the 200 series stainless steel with inferior quality, do not take magnetism very likely, the stainless steel that decides it is genuine from this, make a big mistake.

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