The material difference between SS304 and SS316
1、The brand is different
304 stainless steel corresponding to Chinese brand 0Cr18Ni9. The 316 stainless steel corresponds to the Chinese grade 0Cr17Ni12Mo2.
2、The composition is different
304 stainless steel is mainly made of chromium - nickel stainless steel, with good alkali resistance, acid resistance and corrosion resistance. Suitable for stainless steel POTS and pans. The 316 stainless steel added with molybdenum element, better performance than 304, has good chloride corrosion resistance performance, the use effect is better, belongs to the food grade, often used in the food industry, watch industry, medical equipment and so on. So 316 is more expensive than 304.
3、Different materials
304 stainless steel is made of universal stainless steel material, which can resist chemical oxidation and must be used in the national pressure cooker standards. The standard material of stainless steel pressure cooker is above 304. Because there are not many pressure cooker production factories approved by the state, these factories are honest and all use the minimum standard 304 stainless steel material. And 316 stainless steel senior supplies with 10% nickel to make stainless steel more durable and corrosion resistant, this stainless steel is called 18-10 stainless steel, that is, "medical stainless steel", completely without metal ion precipitation.
4、Different practicability
316 mainly reduces Cr content, increases Ni content and increases Mo2%-3%. Thus its corrosion resistance is stronger than 304, suitable for use in chemical industry, seawater and other environments.