There is no harm. Generally, the Cr content of stainless steel is greater than 13%. Ferrite is only the structure of steel, and there are no harmful elements.

Project Austenite Stainless Steel Martensite Stainless Steel

Lead (calculated as Pb), mg/L in 4% acetic acid immersion solution ≤ 1.0 1.0.

Chromium (calculated as Cr), mg/L ≤ 0.5 in 4% acetic acid soaking solution.

Nickel (calculated as Ni), mg/L in 4% acetic acid immersion solution ≤ 3.0 1.0.

Tin (calculated as cadmium) is ≤ 0.02 0.02 in mg/L 4% acetic acid solution.

Arsenic (As), mg/L 4% acetic acid solution ≤ 0.04 0.04.

Note: The soaking conditions are boiling for 30 minutes, and then room temperature for 24 hours.

Food-grade stainless steel refers to stainless steel materials that meet the requirements of People's Republic of China (PRC) national standard GB 9684-88 and Hygienic Standard for Stainless Steel Tableware Containers, and its lead and chromium contents are far lower than ordinary stainless steel.

Austenitic stainless steel (1Cr 18Ni9Ti, 0Cr 19Ni9, 1Cr 18Ni9) should be selected for all kinds of containers for storing food and food processing machinery. All kinds of tableware: martensitic stainless steel (0Cr 13, 1Cr 13, 2Cr 13, 3Cr 13) should be selected.