If you have a piece of steel, how can you determine whether it is stainless steel?
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If you have a piece of steel, how can you determine whether it is stainless steel?
Reply to 1# zhijiong614: I’ve seen people who steal things in my factory use magnets to catch them; if it gets stuck, then it’s fine, but if not…
Creating a spectrum is the simplest thing – it’s obvious at a glance
By stainless steel, you must be referring to \"austenitic stainless steel\"; to determine this type of steel, one checks whether it is magnetic or not. Several other major categories, such as \"martensitic stainless steels\" and \"ferritic stainless steels\", are also magnetic; therefore, laypeople often do not consider them to be stainless steel (when in fact they are genuine stainless steels).
This post was last edited by qugd on 2011-1-11 23:03. To determine the composition of steel, it is only when the chromium content reaches a certain level that it can be considered stainless steel. Chromium in stainless steel is the key component that prevents the steel from rusting. When the chromium content exceeds 12%, stainless steel is so named because the dense oxide formed by chromium prevents the steel from rusting.
First, use a magnet to roughly determine whether it is stainless steel; however, some stainless steel parts that have undergone stamping or metalworking processes can exhibit magnetic properties, while cast iron will be attracted by a magnet. Strictly speaking, to determine whether something is stainless steel, element analysis is required, with the contents of elements such as Ni, Cr, Ti, and Mo used to identify whether it is stainless steel and to assess its quality.
If it simply can’t be drawn in, congratulations – it’s 0Cr25Ni20
The accurate term should be spectral analysis; the incorrect one is permanent magnet.
Actually, this question is too general. First of all, you need to determine what type of stainless steel you are testing. The simplest way is, of course, to conduct a spectroscopic analysis to check whether the element contents meet the standards. If I have to answer your question, I can only say that as long as the chromium content is 13%, it can be considered stainless steel. Of course, the standards have changed a lot these days; even 409L, which has a chromium content of around 12.5%, is now classified as stainless steel.