Making tea in stainless steel cups will not do harm to human health. Tea leaves are nearly neutral, with low ionic strength and almost no corrosiveness, and it is even more impossible to corrode stainless steel cups in a short time. Although stainless steel contains chromium, the state has strict standards for stainless steel used in catering containers. For regular stainless steel cups, even if there is chromium precipitation when making tea, it is far from harmful to human health.

304 stainless steel

304 stainless steel is a common material in stainless steel, with a density of 7.93 g/cm, also known as 18/8 stainless steel in the industry. High temperature resistance of 800℃, good processability and high toughness, widely used in industry, furniture decoration industry and food and medical industry. Common marking methods in the market are 06Cr 19Ni 10 and SUS304, in which 06Cr 19Ni 10 generally represents national standard production, 304 generally represents ASTM standard production and SUS304 represents Japanese standard production.

304 is a general-purpose stainless steel, which is widely used to manufacture equipment and parts that require good comprehensive performance (corrosion resistance and formability). In order to maintain the inherent corrosion resistance of stainless steel, steel must contain more than 18% chromium and more than 8% nickel.