What scientific methods can be used to test 304 stainless steel?
The current use of stainless steel measuring fluid to identify stainless steel actually only answers the question of "what it is not" to a certain extent, but cannot truly answer the question of "what exactly it is". Use "304 type" measuring fluid or "Ni8" type measuring fluid to test the so-called "304" products of the merchants. If the test results are the same as those of the real 304 products, we must not conclude that it is 304, but can only say "possibly" It's 304. Because whether it is energized type or non-energized type, the test result is only a necessary but not sufficient condition for us to judge that the steel being tested is a certain steel type (such as 304). If we want to truly understand the exact grade of steel, we must comprehensively measure its chemical composition through professional chemical analysis or spectral analysis, and then identify it against relevant authoritative standards. Of course, these methods are more professional and accurate than using stainless steel measuring fluids, but they are also much more difficult or costly.
In addition, the quality of stainless steel materials is not only determined by its chemical composition, but also related to its organization, performance, purity and other factors. For the determination of these factors, stainless steel measuring fluid is obviously powerless and can only rely on relevant professional testing and inspection. The stainless steel measuring fluid products currently on the market are not scientific enough in terms of labeling and other aspects. As mentioned above, "N" is used instead of "Ni", and some divide 200 series stainless steel into "200, 201, 202", etc. During actual use, it was also found that some test results are difficult to distinguish with the naked eye, which can easily lead to errors. For example, during the test, apart from the obvious color differences between 201, 202 and 301, 304, the color changes between 201 and 202, and between 301 and 304 are not very obvious.
In any case, when purchasing stainless steel products, in addition to paying attention to the product's factory inspection certificate or quality certificate, we must pay attention to the reputation of the merchant, and not be greedy for cheap. We can still detect market deception and the true face of fake and inferior stainless steel products. Take some action on your own initiative. The stainless steel measuring liquids in small bottles currently on the market are small in size, light in weight, easy to carry, low in cost, and the test operation is very simple. They can be regarded as a powerful tool and "weapon" for professional testing of stainless steel materials, metal materials, There are two methods for detecting the composition of alloy materials. One is to use a direct reading spectrometer to detect all elements and can detect C elements. The other is to use an X-ray fluorescence spectrometer. This method has fast detection speed and is easy to carry. Can accurately detect ingredients and brands.
.jpg)
