Product Introduction:
Stainless steel is defined as stainless, corrosion resistance as the main characteristics, and chromium content of at least 10.5%, carbon content of up to 1.2% according to GB/T20878-2007.
Stainless steel is the abbreviation of stainless acid-resistant steel, resistant to air, steam, water and other weak corrosive media or stainless is called stainless steel sheets; Steel that is resistant to chemical corrosion media (acid, alkali, salt and other chemical erosion) is called acid-resistant steel. Below is stainless steel coils：
Due to the difference in chemical composition of the two and their different corrosion resistance, ordinary stainless steel sheets is generally not resistant to chemical corrosion, while acid-resistant steel is generally stainless steel. The term "stainless steel" does not simply refer to one type of stainless steel, but to more than a hundred industrial stainless steels, each developed with good properties in its specific application area. The key to success is first to figure out the purpose and then to determine the right grade. There are usually only six steel grades related to the application of building construction. They all contain 17~22% chromium, and better steel grades also contain nickel. The addition of molybdenum can further improve atmospheric corrosion, especially resistance to chloride-containing atmospheres.
In general, the hardness of stainless steel is higher than that of aluminum alloy, and the cost of stainless steel is higher than that of aluminum alloy.
Product name: | stainless steel plates/stainless steel coils |
Material: | 304/316L/310S/201 |
Surface Technology: | Film, brushed, polished, hot rolled, cold rolled |
Key features:
1. Corrosion resistance
The vast majority of stainless steel sheets products require good corrosion resistance, such as first- and second-class tableware, kitchenware, water heaters, water dispensers, etc., some foreign businessmen also do corrosion resistance tests on the product: use NaCl aqueous solution to heat to boiling, after a period of time pour the solution, wash and dry, weigh the loss, to determine the degree of corrosion (note: when the product is polished, because the emery cloth or sandpaper contains Fe , which can cause rust spots on the surface during testing).
2. Polishing performance
In today's society, stainless steel plates products are generally polished during production, and only a few products such as water heaters and water dispensers do not need to be polished. Therefore, this requires that the polishing performance of the raw material is very good.
3. Heat resistance
Heat resistance means that stainless steel can still maintain its excellent physical and mechanical properties at high temperatures.
Effect of carbon: Carbon is an element in austenitic stainless steels that strongly forms and stabilizes austenite and expands the austenitic region. Carbon is about 30 times more capable of forming austenite than nickel, a gap element that can significantly increase the strength of austenitic stainless steels through solution strengthening. Carbon also improves the stress and corrosion resistance of austenitic stainless steel sheets in highly concentrated chlorides such as 42% MgCl2 boiling solution.
4. Corrosion resistance
When the number of chromium atoms in steel is not less than 12.5%, the electrode potential of steel can be mutated, and the negative potential can be raised to a positive electrode potential. Prevents galvanic corrosion.
Application:
Widely used in construction and decoration, medical equipment, catering kitchen utensils, sanitary ware, food machinery, containers, precision electronics, rail transit, machinery manufacturing, chemical equipment and other fields.
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