Identify how much stainless steel containing nickel is detected

When many customers purchase stainless steel, because they will not be able to identify the amount of nickel contained in stainless steel, they are always worried about being deceived. Here are some common methods to identify how much nickel is contained in stainless steel.
First, stainless steel is generally divided into chromium stainless steel and nickel stainless steel (only one of a variety of categories), usually we use the method of magnetic inspection of stainless steel is only applied to a part of stainless steel, in fact, two more or less are all magnetic, but Is chromium-containing stainless steel magnetic stronger than nickel-containing stainless steel, plain white you can use magnets to attract chromium-containing stainless steel, on the nickel-containing stainless steel to attract very weak. If only for nickel-containing stainless steel is of course magnetic the weaker the more nickel. This method It is also the simplest and most commonly used method.
Second, the use of stainless steel test solution to identify stainless steel test solution, also known as stainless steel syrup, as long as a little drop in the stainless steel, the syrup immediately and stainless steel chemical reaction, through the reaction of different colors, can clearly determine the type of stainless steel.
Third, through the identification of metal instruments.
Fourth, the spark identification method: mainly used in steel, under the grinding wheel grinding due to friction, high temperature effects, various elements, particles generated when the oxidation of the number of sparks, shape, bifurcation, color, etc., to identify the chemical composition of the material (composition Elemental) and approximate content of a method. The content of nickel is also best 8.0% to 11.0%. The nickel content is of course, but other elements such as carbon, chromium, manganese, sulfur content is also very important, but also should pay more attention!!

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