Stainless steel water tank material selection
Stainless steel is a stainless steel and acid-resistant steel referred to or referred to as, in air and fresh water or chemical corrosion medium can resist corrosion of a high alloy steel. Each stainless steel must contain a certain amount of chromium. So far, there is no chromium-free stainless steel. Chromium has become the main element of the performance of stainless steel, the fundamental reason is to add more than 12% of the steel as an alloying element, the steel surface automatically form a very thin colorless, transparent and very smooth layer of chromium Of the oxide film (ie, passivation film), the formation of this layer greatly reduced the oxidation of steel.
According to the content of various metal materials, different, especially the "nickel" content of different stainless steel is divided into a variety of grades, common are: 304,301,202,201 and so on. Of which 304 "nickel" the highest content, according to national standards of not less than 8%. Other grades of the gradual decline, such as 201 "nickel" content of less than 1%, because nickel is rare metals, the price is very expensive, so the price of 304 than 201 expensive is not surprising.
At the same time, the strength of stainless steel rust and corrosion resistance depends on the content of "nickel" in the composition of metal materials. The higher the content of "nickel", the stronger the rust resistance and corrosion resistance of stainless steel. The main role of nickel in stainless steel is that it changes the crystal structure of the steel to form austenite crystal structure, thereby improving and enhancing the passivation mechanism of chromium, its resistance to intergranular corrosion is improved, while processing, weldability And toughness and other mechanical properties.
"The same is the stainless steel tank, the market sales of 304J1,201 series, the price is much cheaper than the SUS304 2B stainless steel water tank, stainless steel water tank why choose the price more expensive 'it?" This is the general idea of the customer.
Engaged in the stainless steel tank manufacturing industry for more than 10 years of Shijiazhuang Steel Power Tank Co., Ltd., said the manager, "At present, a considerable number of consumers do not understand the knowledge of stainless steel tanks, the total that as long as stainless steel, no matter what kind of environment , And no matter what the material of stainless steel, will not rust, with almost all, it is not true.
For more information, please visit our website: www.grp-watertank.com, or contact us with E-mail, our E-mail address is rask@coolingtowerfiller.com, you can also chat us straightly on whatsapp: 008618330029204
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