I. Composition
303 stainless steel is a special austenitic stainless steel with high content of sulfur and selenium, which makes its cutting performance better than 304 stainless steel. In contrast, 304 stainless steel is a widely used stainless steel material, which mainly contains chromium and nickel, and has good corrosion resistance and heat resistance.
Second, performance.
Because of the high content of sulfur and selenium, the cutting performance of 303 stainless steel is obviously better than that of 304 stainless steel. However, 304 stainless steel has excellent corrosion resistance, especially in oxidizing environment.
Third, use.
Because of its superior cutting performance, 303 stainless steel is widely used to manufacture parts that need rapid cutting, such as bolts, nuts and shafts. On the other hand, because of its excellent corrosion resistance and heat resistance, 304 stainless steel is widely used in the manufacture of equipment and parts in chemical, petroleum, medical and food industries.