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Difference between 316 and 304 stainless steel
Source: Zebu Skape Metal Technology     Time:2023-03-13

304 stainless steel
Grade 304 stainless steel is generally considered as the most common austenitic stainless steel. It contains high nickel content, usually between 8 and 10.5 weight percent, and about 18 to 20 weight percent chromium. Other major alloying elements include manganese, silicon and carbon. The rest of the chemical composition is mainly iron.
The high content of chromium and nickel makes 304 stainless steel have excellent corrosion resistance. Common applications of 304 stainless steel include:

Refrigerator, dishwasher and other electrical appliances

Commercial food processing equipment
a fastening
The Conduit
heat exchanger
The structure of standard carbon steel will be corroded in the environment.
316 stainless steel
Similar to 304, Grade 316 stainless steel contains a large amount of chromium and nickel. 316 also contains silicon, manganese and carbon, most of which are iron. The main difference between 304 and 316 stainless steel is its chemical composition. 316 contains a large amount of molybdenum; It is usually 2 to 3% by weight, while there is only trace in 304. Higher molybdenum content leads to higher corrosion resistance of Grade 316.
When selecting austenitic stainless steel for marine applications, 316 stainless steel is generally considered to be one of the most suitable choices. Other common applications of 316 stainless steel include:
Chemical processing and storage equipment.
Oil refining equipment
Medical equipment
Marine environment, especially in the presence of chloride

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