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Stainless steel identification potion? The use of stainless steel identification potion to identify stainless steel, only to a certain extent answered the question of “what is not”, and can not really answer the question of “exactly what is”. For example, use stainless steel identification potion to identify 304 stainless steel, if the test result is the same as 304 stainless steel, then the tested stainless steel may be 304 stainless steel. Note, it’s just “maybe.” What about 316L low-carbon stainless steel? Now most of the stainless steel identification potion on the market can only detect 200, 201, 202, 301, 304, 316 and other six stainless steel materials. 316L low-carbon stainless steel is not in the identification range of stainless steel identification solution. Moreover, even if there is, the result of the test is only a necessary but not sufficient condition for us to judge that the measured stainless steel is a certain steel class (such as 316L low-carbon stainless steel). This is called “maybe”. If you want to really figure out the exact grade of stainless steel, then we must fully identify its chemical composition through professional chemical analysis or spectral analysis and other methods, and then compare the provisions of the chemical composition in the national standard for stainless steel to identify. Chemical analysis This method to use the relevant professional laboratory to test the measured stainless steel material, the identification results given compared with the use of stainless steel identification potion, more professional and accurate, but in terms of cost is also much higher. In addition, the quality of stainless steel material is not only determined by its chemical composition, but also related to its organization, performance, purity and other factors. For the identification of these factors, stainless steel identification potion is obviously powerless, only with the help of the relevant professional chemical analysis. This method of spectral analysis in our stainless steel industry is the most commonly used to identify the grade and chemical composition of stainless steel. Using a handheld spectrometer （PMI testing）to detect the chemical composition of the measured stainless steel material, this instrument detection speed, easy to carry, will not destroy the measured stainless steel surface, and can accurately give the test results, and then according to the test results against the relevant stainless steel authority standards (such as Chinese standards) to obtain its brand. In any case, when purchasing stainless steel materials, in addition to paying attention to the product’s factory inspection certificate or quality certificate, we should pay attention to the reputation of stainless steel merchants, and do not seek cheap. From Hua steel co., our PMI testing is our basic service, which need confirm the material grade and give customer the quality insurance!