Is 304 stainless steel the same as food grade 304 stainless steel?

Is 304 stainless steel the same as food grade 304 stainless steel? 304, is a stainless steel brand, the American name. Its Chinese brand name is 06Cr19Ni10, which is very complicated and difficult to read, so we are more used to calling it "304 stainless steel". Is 304 stainless steel the same as food grade 304 stainless steel? Different! Food grade and brand belong to two systems, but they are inextricably linked. Like a man who can be both a man and a father - does a man have to be a father? uncertain. The same is true in the field of stainless steel, the brand 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 such as lead, chromium, nickel, cadmium and arsenic.

When we buy tableware (in fact, "tableware" is not very standard, it should be "stainless steel that contacts food"), we should mainly see whether there is "GB4806.9-2016" on its packaging, and only products that have been tested. , we can buy with confidence. By the way: Some stainless steel products will have a "food grade 304" stamp on them. In fact, we know that "304" itself is not a Chinese name. How can this stamp be a high-level certification mark? This kind of logo is still an unofficial product, and there is no official "logo" in the standard. The only reference to the logo in the original text is "Other" in Section 4: 4.1: It should be marked on the product or the smallest sales package. "For food contact"; other than this, there are no instructions and additional elements. Therefore, whether there is this stamp or not, we should not judge the quality of stainless steel in turn. Again, it is the most reliable to see if there is "GB4806.9-2016" on the package.

The difference between food grade 304 and SUS304 stainless steel SUS304 refers to 304 stainless steel. SUS is a Japanese material standard, and 304 stainless steel is a stainless steel produced in accordance with the American ASTM standard. 304 is equivalent to my country's 06Cr19Ni10 stainless steel. Japan also quoted the name of the United States and called it: SUS304. A reminder to those who only saw it from advertisements or promotional materials: First, most of the claims in advertisements are not credible, and many of the online sales are like this. Please be careful to confirm the materials used and the qualification certificate. Second, the so-called "food grade", "aviation grade" or similar expressions all have corresponding national standards. Just looking at the steel grade does not determine this. Only 304 stainless steel that complies with the national standard (GB 4806.9-2016 National Standard for Food Safety - Metal Materials and Products for Food Contact) is the real "food grade" stainless steel. Third, even if the raw material uses real food-grade stainless steel, whether the final product can reach "food-grade" still depends on the processing level. Only products that meet national standards are safe "food-grade" stainless steel products.