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How to use stainless steel tester
Feb 13, 2019

How to use stainless steel tester

Using stainless steel measuring solutions, we can easily see some of the deceptive behaviors in the market and the true face of fake stainless steel. For example, to buy 304 stainless steel, we can test the "304" products provided by the manufacturer. If it is true 304, we use the above "304 type" measuring liquid or "Ni8" type measuring liquid test, the corresponding test result should appear, otherwise, it is not true 304; if further test with "low Ni" measuring liquid It was found that the beads were purple-red, indicating that the product is a kind of steel with higher manganese content, and it is also likely to be a prevailing stainless steel with low corrosion resistance, so-called "200 series stainless steel". When using a measuring fluid that measures the approximate content of specific elements in stainless steel for testing and identification, we are required to refer to and understand the chemical composition requirements in the national standard for stainless steel.

               At present, the use of stainless steel measuring liquid to identify stainless steel, in fact, only to some extent answer the "not what" problem, and can not really answer the question "what is exactly". For example, use the "304 type" measuring liquid or the "Ni8" type measuring liquid to test the so-called "304" product of the merchant. If the test result is the same as that of the true 304 product, we must not conclude that it is 304, but can only say " Maybe" is 304. Because the test results are either a power-on type or a power-on type, the test results are only a necessary but not sufficient condition for us to judge that the steel being tested is a steel grade (such as 304). If we want to really figure out the exact grade of steel, then we must comprehensively determine its chemical composition by professional chemical analysis or spectral analysis, and then identify it according to relevant authoritative standards. Of course, these methods are more professional and accurate than using stainless steel measuring solutions, but they are also much higher in terms of difficulty or cost.

           In addition, the quality of stainless steel 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, the stainless steel measuring solution is obviously powerless, and only by means of the relevant professional testing.

           At present, stainless steel measuring liquid products on the market still have insufficient scientific points in terms of marking. In the case where "N" is replaced by "N" as mentioned above, there are also cases in which 200 series stainless steel is classified into "200, 201, 202" and the like. In the actual use process, it was also found that some test results are difficult to distinguish with the naked eye and easily lead to errors. For example, except for the obvious color difference between 201, 202 and 301 and 304, the color change between 201 and 202 and between 301 and 304 is not obvious. These unscientific and inadequate places require further improvement by relevant manufacturers.

          In any case, when purchasing stainless steel products, in addition to paying attention to the factory inspection certificate or quality certificate of the product, we must pay attention to the credibility of the business, and not to be cheap, we can still see the market fraud and the true face of fake stainless steel products. Take some initiative to take some action. At present, the small-sized stainless steel measuring liquid on the market is small in size, light in weight, convenient to carry, and low in cost. The price of each bottle varies from ten to twenty yuan, and the cost of each test is Only a few cents), the test operation is also very simple, it is a powerful tool and "weapon", we may wish to try!

           Using stainless steel measuring solutions, we can easily see some of the deceptive behaviors in the market and the true face of fake stainless steel. For example, to buy 304 stainless steel, we can test the "304" products provided by the manufacturer. If it is true 304, we use the above "304 type" measuring liquid or "Ni8" type measuring liquid test, the corresponding test result should appear, otherwise, it is not true 304; if further test with "low Ni" measuring liquid It was found that the beads were purple-red, indicating that the product is a kind of steel with higher manganese content, and it is also likely to be a prevailing stainless steel with low corrosion resistance, so-called "200 series stainless steel". When using a measuring fluid that measures the approximate content of specific elements in stainless steel for testing and identification, we are required to refer to and understand the chemical composition requirements in the national standard for stainless steel.

               At present, the use of stainless steel measuring liquid to identify stainless steel, in fact, only to some extent answer the "not what" problem, and can not really answer the question "what is exactly". For example, use the "304 type" measuring liquid or the "Ni8" type measuring liquid to test the so-called "304" product of the merchant. If the test result is the same as that of the true 304 product, we must not conclude that it is 304, but can only say " Maybe" is 304. Because the test results are either a power-on type or a power-on type, the test results are only a necessary but not sufficient condition for us to judge that the steel being tested is a steel grade (such as 304). If we want to really figure out the exact grade of steel, then we must comprehensively determine its chemical composition by professional chemical analysis or spectral analysis, and then identify it according to relevant authoritative standards. Of course, these methods are more professional and accurate than using stainless steel measuring solutions, but they are also much higher in terms of difficulty or cost.

           In addition, the quality of stainless steel 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, the stainless steel measuring solution is obviously powerless, and only by means of the relevant professional testing.

           At present, stainless steel measuring liquid products on the market still have insufficient scientific points in terms of marking. In the case where "N" is replaced by "N" as mentioned above, there are also cases in which 200 series stainless steel is classified into "200, 201, 202" and the like. In the actual use process, it was also found that some test results are difficult to distinguish with the naked eye and easily lead to errors. For example, except for the obvious color difference between 201, 202 and 301 and 304, the color change between 201 and 202 and between 301 and 304 is not obvious. These unscientific and inadequate places require further improvement by relevant manufacturers.

          In any case, when purchasing stainless steel products, in addition to paying attention to the factory inspection certificate or quality certificate of the product, we must pay attention to the credibility of the business, and not to be cheap, we can still see the market fraud and the true face of fake stainless steel products. Take some initiative to take some action. At present, the small-sized stainless steel measuring liquid on the market is small in size, light in weight, convenient to carry, and low in cost. The price of each bottle varies from ten to twenty yuan, and the cost of each test is Only a few cents), the test operation is also very simple, it is a powerful tool and "weapon", we may wish to try!

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