Food grade stainless steel refers to the stainless steel material that meets the provisions of the "Chinese People's **** and National Standard/Stainless Steel Food Container Hygiene Standard" GB9684-2011, and its lead content is much lower than that of general stainless steel.
Food grade stainless steel refers to the part of food machinery in contact with food, must meet certain food safety requirements. Because food production food grade stainless steel process to use a lot of acid and alkali, and stainless steel containing chromium, unqualified stainless steel, will dissolve a variety of valence of chromium, toxic; and requirements to limit the content of lead, cadmium, and other various alloying impurity elements.
304 is a general-purpose stainless steel, it is widely used in the production of equipment and machine parts that require good overall performance (corrosion resistance and molding). In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. 304 stainless steel is a grade of stainless steel produced according to ASTM standards.
Extended information
Food-grade stainless steel is in line with the national GB9684 standard certification, the real can be in contact with food and does not produce bodily harm to the stainless steel, GB9864 stainless steel is in line with the national GB9684 standard certification of stainless steel, so GB9864 stainless steel is food-grade. Stainless steel.
The so-called 304 stainless steel does not require must be certified by the national GB9684 standard, 304 stainless steel is not equal to food-grade stainless steel, 304 stainless steel is not only used for kitchen utensils, but also widely used in industry, the harm to the human body is not known.
In the purchase, the regular goods will be in the product surface and the inner wall will be played on the "food-grade 304 stainless steel" logo, and the logo for the "food-grade - GB9684" products, security is higher!
This is the first time I've ever seen a food-grade product.