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What is food grade stainless steel

Food-grade stainless steel refers to the metal materials that comply with the "National Standard of the People's Republic of China / Hygienic Standard for Stainless Steel Tableware Containers" GB4806.9-2016, and stainless steel will not dissolve various alloys and harmful substances in the process of using acid and alkali in food production. .

specific standards
food grade stainless steel

Various food containers and food
The processing machinery should be made of austenitic or ferritic stainless steel (1Cr18Ni9Ti, 0Cr19Ni9, 1Cr18Ni9, 1Cr17Ni2). Martensitic stainless steel (0Cr13, 1Cr13, 2Cr13, 3Cr13) can also be used for the abrasive tools in the processing part.
The specific physical and chemical indicators are as follows:
Item Austenitic Stainless Steel Ferritic Martensitic Stainless Steel
Lead (calculated as Pb), mg/L in 4% acetic acid soaking solution ≤ 1.0 1.0 .
Chromium (calculated as Cr), mg/L in 4% acetic acid soaking solution ≤ 0.5
Nickel (calculated as Ni), mg/L in 4% acetic acid soaking solution ≤ 3.0 1.0 .
Cadmium (calculated as Cd), mg/L in 4% acetic acid solution ≤ 0.02 0.02 .
Arsenic (as As), mg/L 4% acetic acid solution ≤ 0.04 0.04 .
Note: The soaking conditions are all boiled for 30min, and then at room temperature for 24h.