Stainless steel bolts permeance?
In the component of austenitic stainless steel, valuable alloy composition is much, general price is higher than martensitic stainless steel. Austenitic stainless steels are used for a variety of reasons. They are not magnetic. Therefore, the quality of the austenitic stainless steel can not be changed. It can be determined by analytical chemistry and metallographic examination.
When stainless steel is cold deformed, it is easy to cause the precipitation of martensite, especially for 18-8 steel. When the deformation degree is 10%, the precipitation of martensite can be observed.Martensitic stainless steel is magnetic and often used in making medical equipment, knives, tableware.
Stainless steel is divided into austenitic stainless steel and martensitic stainless steel. 304 stainless steel is our original steel 0Cr18Ni9, which is a kind of austenitic stainless steel. Not all are not only pure magnetic stainless steel, austenitic stainless steel is not magnetic, happened with standard weight of austenitic stainless steel produced with magnetic, magnetic method is effective to eliminate the solution heat.
I don't think that the quality of stainless steel can be judged by magnetism. If the finished products have special requirements for magnetism, there should be proper heat treatment and cold working matching process, which will be much more difficult for the finished product stage.
