304 stainless steel pipe how to determine whether there is magnetic

In daily life stainless steel tube is not magnetic is in fact the basic common sense of life, let alone 304 Stainless Steel Tube, stainless steel tube is not a sentence to be able to say whether the magnetic. As a very common material in life, 304 stainless steel pipe in the end there is no magnetism?

Sometimes even the collection of scrap vendors will carry a suction stone, used to test the material is not stainless steel, so as to avoid receiving the wrong material. This is actually only a simple borrowing in life. Iron is magnetic, and thus can be sucked by the suction stone to attract, and Stainless Steel Pipe added to other elements, and in the smelting process formed a different crystal structure, so it will affect the magnetic performance of the final product. Most varieties of stainless steel do not have magnetic properties, but some specifications of stainless steel is magnetic. 304 stainless steel pipe is the use of 304 stainless steel processed into steel pipe, this material is usually non-magnetic or weakly magnetic. However, in the production and smelting process of some accidental factors, will also make the end product microstructure changes, resulting in a weak magnetic. Therefore, it can not be said in general that 304 stainless steel pipe is absolutely no magnetic.