304, is the grade of stainless steel, the American name. Its Chinese brand name is 06Cr19Ni10, which is very complicated and difficult to read, so we are more accustomed to calling it "304 stainless steel".
Is 304 stainless steel the same as food grade 304 stainless steel? Different! Food grade and brand name belong to two systems, but they are inextricably linked. Just like a person, it can be both a man and a father-must a man be a father? Not necessarily.
The same is true in the field of stainless steel. The grade determines the corrosion resistance of stainless steel. Whether it is food grade, in addition to the requirements for the corrosion resistance of stainless steel, there are also requirements for the precipitation indicators of five heavy metals of lead, chromium, nickel, cadmium, and arsenic.
In the old national standard GB9684-1988 "Sanitary Standards for Stainless Steel Tableware", the stainless steel used in tableware must meet two conditions at the same time: one, the corrosion resistance must meet the standard (specify the grade standard); two, the precipitation index of five kinds of heavy metals To meet the standard.