It is recommended to choose 304 or above for stainless steel kitchenware
Stainless steel is a steel alloy containing at least 10.5% chromium. When chromium comes into contact with oxygen in the air, it forms chromium trioxide, so a thin layer of chromium oxide always sits on the skin like a stainless steel surface, protecting it from dirt and moisture. This is why stainless steel is usually 'stainless'. However, if you do not pay attention to cleaning and maintenance, stainless steel products will still be deformed or rusty. For example, food residue stains stay on stainless steel for a long time, and if it is not cleaned in time, moisture and acid will corrode the metal surface, leaving some unsightly stain colors. When choosing stainless steel kitchenware, do not buy inferior stainless steel. Because of the inferior raw materials, the rough and inferior stainless steel products may contain a variety of heavy metal elements harmful to human health, especially lead, aluminum, mercury, and cadmium. It is recommended to buy 304 steel products. 304 steel: refers to stainless steel with a chromium content of 18% and a nickel content of 8%. It is widely used in corrosion-resistant containers, kitchen utensils, furniture, railings, medical equipment, etc. There are three common codes on stainless steel kitchenware: '13-0' (420 steel), '18-0' (430 steel), and '18-8' (304 steel). The number before the code represents the chromium content, and the number after the code represents the nickel content. The safety of stainless steel utensils is mainly due to the migration of heavy metals. Generally speaking, the common 304 steel on the market now has less chromium migration. Re: What is the difference between stainless steel 206 and 304? 304 is a universal stainless steel, which is widely used to make equipment and parts that require good overall performance (corrosion resistance and formability). 304 and 316 stainless steel are a grade of stainless steel produced in accordance with the American ASTM standard. 304 is equivalent to our country's 0Cr19Ni9 (0Cr18Ni9) stainless steel. 304 contains 19% chromium and 9% nickel. The stainless steel 206 belongs to the 200 series. 200 series—chromium-nickel-manganese austenitic stainless steel, 200 series is not recommended for storage/processing acid/corrosive chemicals. The grade of 300 series stainless steel is higher than that of 200 series stainless steel.
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