Magnetic testing

To detect the material to be tested with magnets, if there are strong magnetism (except weak magnetic), first exclude 304 and 316 materials, but 416, 430, 443, etc.

Use stainless steel to identify potions

Drop the potion on stainless steel and observe the color and response speed. The response is fast, and the stainless steel model can be judged in a few seconds. 201 stainless steel shows dark red, 202 shows red, 301 shows light red, 304 shows colorless or pale yellow.

Judgment of color

The surface color of the polished stainless steel: 300 series stainless steel silver white and jade color; 400 series stainless steel white and slightly gray, weak luster; the color of the 200 series stainless steel is similar to the 300 -series stainless steel, slightly faint. The surface color of the stainless steel without pickling: 300 series stainless steel is brown -white; 400 series stainless steel is brown black; 200 series stainless steel is black.

British identification

Still stainless steel on the sand wheel and watch the spark. For example, the spark is streamlined and there are more dense festivals, that is, the 200 -series stainless steel with higher manganese -containing stainless steel; if there is no festival flower, it is 300 or 400 stainless steel.

Detection agency for testing

The detection agency is mainly to analyze and detect each element and its content through the spectrometer, and the test results are more accurate.

Each method has its limitations. In practical applications, multiple methods need to be comprehensively judged.