Can the stainless steel be tested with a magnet?
In general, austenitic stainless steel and austenitic stainless steel (non-magnetic magnet can not suck), there are other ferrite stainless steel, with the ferromagnetic (magnets attract). But stainless steel should not be judged by magnetism alone. For stainless steel, whether or not the magnet is sucked on or not, as long as the quality standards are met, it is stainless steel. There are a lot of stainless steel materials in order to achieve better use effect, thus adding other elements, 321 stainless steel material is like this.
If chromium and nickel are added to the molten steel, the resulting austenitic steel is stainless steel that the magnet does not absorb. If the main alloying elements in the steel are chromium, iron, carbon, and a small amount of nickel (or no nickel), the steel is made of stainless steel, also called ferritic stainless steel or martensitic stainless steel. In addition to the austenitic stainless steel magnet not on ferrite and martensitic stainless steel are magnetic. Because nickel is scarce in the world and expensive in price, the nickel content of stainless steel is higher in the market and the magnet can not absorb it. At present, because austenitic stainless steel in the proportion of stainless steel is still very large, so that people have produced all stainless steel are non-magnetic concept of error.
According to the microstructure of stainless steel can be classified into austenitic stainless steel, ferritic stainless steel and martensitic stainless steel, austenitic stainless steel without magnetic, can check out, Ferritic and martensitic stainless steel are magnetic, cannot check out.
