Identification method of stainless steel parts

With the development of economy, the use of stainless steel has become more and more extensive. People’s daily life is closely related to stainless steel. However, many people do not know the function of stainless steel, nor do they know the protection and maintenance of stainless steel. Most people think that stainless steel will never rust. In fact, the reason why stainless steel has excellent corrosion resistance is that a passive film is formed on the surface, which exists in the form of more stable oxide in nature. In other words, although the degree of oxidation of stainless steel is different according to different operating conditions, it is eventually oxidized, which is generally called corrosion. So, what are the identification methods of stainless steel parts? Today, let our precision hardware machinery manufacturers to take us together to understand it!

Stainless steel parts processing manufacturers inform you that stainless steel refers to the steel which is resistant to weak corrosive media such as air, steam, water, acid, alkali, salt and other chemical corrosive media, also known as stainless acid resistant steel. The following several stainless steel identification techniques for our reference.

1. Liquid medicine detection method: at present, there are several chemical solutions for detecting stainless steel on the market. When one drops on the surface of stainless steel, 201 turns dark brown and 304 turns red.
2. Price estimation method: fully understand the market situation of various steel grades. If the prices of the same steel grade differ greatly, it is necessary to consider whether they are “Li Gui”.
3. The integrity of traders: in the market, enterprises with good integrity will do so. It is better to select more traders for comparison, which is also a way to prevent “Li Gui”.
4. Contract agreement law: stainless steel parts processing manufacturers inform you that in the purchase and sale of stainless steel, large amount of contract should be signed, indicating the steel type, quantity, raw materials, time, delivery time, violation of laws and regulations responsibilities. When the raw materials are inconsistent, they can be recovered by negotiation or by law.