Why 304 stainless steel pipe has magnetic knowledge when used

In our life, we often judge the quality of stainless steel by whether the tube is magnetic, but in fact, this method is not scientific

Yes, such as our common zinc tube alloys, copper tube alloys, etc. can all imitate the appearance of stainless steel, and there is no magnetic tube

It is easy to be mistaken for stainless steel. Even 304 steel, which is the most commonly used pipe, after cold processing

There will be different degrees of tube magnetism, so we can't judge whether the stainless steel is good or bad by whether there is a magnetic tube, so why not 304 tube

Rust steel pipes can be magnetic. Why 304 stainless steel pipe has magnetic knowledge when used

In general, tube stainless steel can be divided into two categories according to its structure at room temperature: tube austenitic stainless steel, tube such as

304321 tubes, 316 tubes, 310 tubes, etc.; the second is martensitic or ferritic stainless steel tubes, such as 430, 420 tubes, 410 tubes, etc,

While austenitic stainless steel pipe is non-magnetic or weak magnetic, martensite or pipe ferrite is magnetic, so 304 stainless steel pipe is tubeless

Magnetic or with a magnetic property. Why 304 stainless steel pipe has magnetic knowledge when used

Why 304 stainless steel pipe has magnetic knowledge when it is used? We often say 304 stainless steel is non-magnetic stainless steel

It is just that its magnetic index is lower than a certain value, that is to say, ordinary stainless steel is more or less with certain tube magnetism

The austenitic stainless steel to which the pipe is lifted is non-magnetic or weakly magnetic, while the ferritic and martensitic stainless steels are magnetic pipes

A small amount of martensite or ferrite group appears in austenitic 304 stainless steel due to component segregation or improper heat treatment tubes during smelting

In this way, weak magnetism will appear in 304 stainless steel tube. In addition, the tube is 304 stainless steel. After cold processing, the structure is also

The tube transforms to martensite, and the greater the cold tube deformation is, the more martensite conversion tubes are, and the stronger the magnetic tube will be.

Therefore, the magnetism of the material is determined by the regularity of the molecular arrangement and the directivity of the electron spin, which can be considered as the material

The physical property of the material and the corrosion resistance of the material are determined by the chemical composition of the material, which is the chemical property of the material

It has nothing to do with whether the material is magnetic or not.