Stainless steel 1 430: It can prevent oxidation under natural conditions, but it cannot resist the oxidation of chemicals in the air. If it is not used frequently, it will still be oxidized due to unnatural factors.
2, 304 stainless steel: This kind of stainless steel can resist the oxidation of chemical substances, and it is a material that must be used in the national pressure cooker standard. The standard material of stainless steel pressure cooker is above 304. Because there are not many pressure cooker factories approved by the state, these factories are very honest and all adopt 304 stainless steel, which is the minimum standard.
3. 3 16 stainless steel: 3 16 stainless steel is made of 10% nickel, which is more durable and corrosion resistant. This kind of stainless steel is called 18 to 10 stainless steel, which is also medical stainless steel. There is no metal ion precipitation at all, which is very safe.
4, different brands and manufacturers of the same stainless steel material, its composition and performance may be different. When purchasing food processing equipment or tableware, we should carefully understand the material and production technology of the products to ensure food safety and the service life of the equipment and utensils.