How to check the quality of stainless steel round steel?

How many ways to check the quality of stainless steel round steel?

Stainless steel round steel is a kind of steel section, that also belongs to the bar. Its cross-section is uniformly round, and the general length is 4 M. And the surface is smooth, without the problem of scarring. But if you want to purchase high-quality steel, then certainly still need to do a good job of measuring the quality. But how to check its quality?

Magnetic test

After all, it is the use of stainless steel material processing, so it is still necessary to do a good job of the basic magnetic test, which is also currently confirming the quality of good stainless steel round steel is a relatively simple method. Because stainless steel is non-magnetic just, but after cold processing, there will be a certain mild magnetism.

Nitric acid point test

If it is a high-quality round steel, then one of its more important features is that it has inherent corrosion resistance to concentrated nitric acid and dilute nitric acid. This is one of the things that makes it very different from other metallic and alloy materials. If it is a high-carbon type of steel, such as 440 steel, then it may be subject to corrosion during the nitric acid point test.

Copper sulfate point test

If you want to differentiate between ordinary carbon steel and stainless steel rounds, then you can also directly utilize a copper sulfate solution to perform the spot test. It is necessary to remove all grease and contaminants from the test area before the test, then simply polish it with a soft abrasive cloth, and then go on to use the copper sulfate solution for the test. In the case of stainless steel, the surface will not produce copper deposits.