400 stainless steel is a high quality material that is widely used in cooking food. It belongs to the 400 series stainless steel, which is an alloy composed of iron, carbon and chromium. The characteristic of this stainless steel is that it has a martensitic structure and at the same time contains rich iron elements, so it shows normal magnetic characteristics. Due to these characteristics, 400 series stainless steel performs well in resistance to high-temperature oxidation, and its physical and mechanical properties are significantly improved over traditional carbon steel. Most 400 series stainless steels can be further enhanced by heat treatment.

When using tableware made of 400 series stainless steel, there are some precautions that need to be followed to ensure food safety and extend the service life of tableware:

Avoid storing foods containing high concentrations of electrolytes for a long time, such as salt, soy sauce, vinegar and vegetable soup. This is because the electrolytes in these foods may react electrochemically with stainless steel, causing harmful metal elements to be dissolved out, thus affecting the safety of food.

Do not cook Chinese medicine in a stainless steel pot. Traditional Chinese medicine contains a variety of alkaloids and organic acids and other components, in the process of heating, these components are easy to react with stainless steel, not only may lead to drug failure, but also may produce more toxic complexes.

Do not use strong alkaline or strong oxidizing chemical cleaning agents, such as baking soda, bleach powder and sodium hypochlorite. These chemicals have a strong electrolytic ability and may damage the surface of stainless steel.

Avoid empty burning stainless steel cookware. Due to the relatively low thermal conductivity of stainless steel and slow heat transfer rate, air burning may cause the chrome plating layer on the surface of the cooker to age or fall off, affecting the service life.

Keep utensils clean and dry. Often wipe and clean tableware, especially after storing vinegar, soy sauce and other condiments, to be cleaned in time to maintain the hygiene of tableware and extend its service life.

Following these usage and maintenance recommendations can help you make better use of your 400 series stainless steel tableware, ensure food safety, and extend the durability of your tableware.