Study on crevice corrosion of ASTM A240 304 stainless steel

When testing ASTM A240 304 stainless steel, we usually choose the right reagent according to different products. When ASTM A240 304 stainless steel shows some corrosion, we need to judge the corrosion form, but also Corresponding detection methods, of course, before the test, we still need to do some research on it, specifically what projects are studied? Let's get to know each other.

1 ASTM A240 304 stainless steel crevice corrosion introduction
Crevice corrosion occurs in the presence of gaps. In modern industry, ASTM A240 304 stainless steel is often combined with other materials, which inevitably has gaps in the instrument. Once the width of the gap can make industrial solution or liquid enter, crevice corrosion is easy to occur. In addition to the gaps in the weld, there is also a case where the solution containing oxygen ions also causes gaps in the ASTM A240 304 stainless steel. Therefore, in response to this ASTM A240 304 stainless steel inspection, it is necessary to judge one by one according to different corrosion conditions.

2 Factors affecting the crevice corrosion of ASTM A240 304 stainless steel
Affects ASTM A240 304 stainless steel has many corrosion factors. The width, length, shape and area of ​​the gap will affect the corrosion. Once the solution enters the gap, corrosion occurs. As the concentration of oxygen in the reagent increases, the rate of corrosion increases. In a closed environment, the higher the temperature, the faster the corrosion rate. The more chloride ions, the greater the likelihood of crevice corrosion.

3 ASTM A240 304 stainless steel protection measures
Try to solve the technical problems and reduce the number of gaps on the equipment. When the test or production process is over, there is no residual solution in the equipment. When choosing ASTM A240 304 stainless steel, you should learn to identify counterfeit and shoddy products. Choose ASTM A240 304 stainless steel sold by regular manufacturers. Stainless steel with good corrosion resistance is generally expensive and needs to be considered as appropriate.

In the ASTM A240 304 stainless steel test, we have to get a correct result and data, the method of detection and the required reagents must be carefully considered, then through the above research on ASTM A240 304 stainless steel crevice corrosion, I hope that everyone can do the corresponding testing work. After deep understanding, I believe that it will be more convenient when testing.
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