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How to distinguish the authenticity of stainless steel tank material?

文章出处:未知责任编辑:管理员人气:发表时间:2019-07-30 12:51 【

At present, the main series of stainless steel sold in China are 300 series and 200 series. The difference between them lies in the content of chemical element nickel, which results in the huge difference in performance and price. At the current nickel price level, the 200 series stainless steel with very low nickel content is only about half the price of 300 series stainless steel, which is far inferior to 300 series stainless steel in anti-corrosion and toughness. It is only suitable for kitchenware, food processing and other fields. If it is used in construction, medical equipment and other fields, there will be great hidden dangers. 200 series products with about 1% nickel content can not withstand general atmospheric corrosion.

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It is hard to see the difference between 200 series stainless steel and 300 series stainless steel from the surface, even experts can not distinguish. In order not to let users lose, we are here to teach you how to identify the material of stainless steel water tank.
The methods are as follows:
1. Touch it with a magnet to see if it absorbs magnetism. If there is no special description, it is generally not magnetic absorption, if magnetic absorption may be replaced by low-grade ferrite material (such as 430).
2. It is also unscientific and wrong to judge the quality of stainless steel only with or without magnetism. Our concept led to the low nickel, low chromium, but no magnetic stainless steel on the market to second-best, deceiving users. Stainless steel water tank products will be rusted, cracked and bulged in a short time. Because 200 series stainless steel and 300 series stainless steel are not different from each other on the surface and have no magnetism, the only way to identify their quality is to go to the local mechanical institute or the unit with metal testing ability to do chemical composition analysis.
3. When purchasing stainless steel water tank, we must let the manufacturer indicate the material quality of the product, and let it issue the material quality certificate and guarantee certificate. In order to prevent economic losses and leave huge potential risks to the project, please choose a regular stainless steel tank manufacturer!

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