Stainless steel is without magnetic? Without magnetic is good stainless steel?
Source：Wuxi Longchao Hits： Date：2016.10.25
A lot of customers take a small to check the goods with a little magnet when they go to the market to buy stainless steel, and think those who do not absorb with little magnet is good stainless steel. ‘Without magnetism, there will be no rust’, it is a wrong idea.
The magnetic properties of stainless steel are determined by the microstructure. During the solidification process, due to different solidification temperatures, "ferrite", "austenite", "martensite" and other stainless steel are formed, among which "ferrite" and "martensite" stainless steel has magnetic. The "austenite" stainless steel has better comprehensive mechanical and technological properties than "ferrite" stainless steel. Currently the market circulation of 200 series, 300 series with high manganese and less nickel content also without magnetic, but its performance has a big difference with high nickel 304. Instead, 304 after drawing, annealing, polishing, casting process will also micro magnetic, Therefore, it is not scientific to judge the stainless steel quality by detecting magnetism