With the continuous development of society, now everywhere in life is stainless steel, no matter which industry will come into contact with stainless steel, but also can have bad business to take other materials posing as 304 stainless steel, but it is anti rust capability is poor, so how to identify 304 stainless steel coil in life?
1.magnetic identification; a long time ago, we have the concept that the use of magnets to determine the true and false stainless steel, although this is not accurate, but there is a certain basis. 304 stainless steel material is austenitic stainless steel, is not magnetic, but after a variety of processing will have weak magnetic, so 304 stainless steel products without magnetic or with weak magnetic. So if you use a magnet to close to ordinary stainless steel and 304 material, you can obviously feel the difference between the magnetic force.
2.drops recognition; austenite is nonmagnetic, so there will be 201, 202, 301 have to pretend to be 304, so if the magnetic judgment is not accurate, there is an agent can quickly identify 304 materials, the chemical liquid drops in a stainless steel products tested, according to color what kind of changes and easy identification of stainless steel.
3.the identification marks; many of the formal basic stainless steel products factory 304 material will have the corresponding seal logo, this is the most direct identification method.
Notes: stainless steel does not rust is relative to other materials is not easy to rust, is absolutely not rust, even 304 stainless steel will rust in the wet salt fog, so the different material of stainless steel used in a suitable environment or field will better prolong its service life.