Are 20 1 and 304 food grade?

20 1 and 304 belong to food grade stainless steel. Stainless steel is the abbreviation of stainless and acid-resistant steel, and the steel resistant to weak corrosive media such as air, steam and water or stainless steel is called stainless steel; The steel grade resistant to chemical corrosive medium is called acid-resistant steel.

Although 20 1 and 304 are both food-grade stainless steels, they are different in corrosion resistance, price and brightness.

1, difference in corrosion resistance

Because 304 and 20 1 contain different elements, the degree of corrosion resistance is different. 304 contains more nickel than 20 1, which ultimately determines the rust resistance of the plate. In other words, 304 is often used outdoors, and its performance is not easy to rust. 20 1 is generally used indoors, and it will rust if left outdoors for a long time.

2, brightness difference

20 1 stainless steel contains manganese, but 304 does not; In terms of color, 20 1 stainless steel will be darker than 304 because of manganese, and 304 will be brighter.

3. Price difference

The market price of 304 stainless steel is more expensive, and 20 1 is cheaper than 304.