What are the differences between common stainless steel 304 and 316 materials?

Nowadays, stainless steel is widely used in our lives, ranging from aerospace equipment to pots and pans. Today, we will share the common stainless steel 304 and 316 materials.
Differences between 304 and 316
304 and 316 are American standards. 3 represents 300 series steel. The last two digits are serial numbers. 304 The Chinese brand is 06Cr19Ni9 (containing less than 0.06% C, more than 19% chromium and more than 9% nickel); 316 The Chinese brand is 06Cr17Ni12Mo2 (containing less than 0.06% C, more than 17% chromium, more than 12% nickel and more than 2% molybdenum).
It is believed that we can also see from the brand that the chemical composition of 304 and 316 is different, and the biggest difference caused by different compositions is that the acid resistance and corrosion resistance are different. Compared with 304 phase, 316 phase has an increase in nickel and nickel, in addition, molybdenum and molybdenum are added. Adding nickel can further improve the durability, mechanical properties and oxidation resistance of stainless steel. Molybdenum can improve the atmospheric corrosion, especially the atmospheric corrosion containing chloride. Therefore, in addition to the performance characteristics of 304 stainless steel, 316 stainless steel is also resistant to corrosion of special media, which can improve the corrosion resistance of chemical hydrochloric acid and ocean, and improve the corrosion resistance of brine halogen solution.
Application range of 304 and 316
304 stainless steel is widely used, such as kitchen utensils and tableware, architectural decoration, food industry, agriculture, ship parts, bathroom, automobile parts, etc.
The price of 316 stainless steel is higher than 304. Compared with 304, 316 stainless steel has stronger acid resistance and better stability. 316 stainless steel is mainly used in chemical industry, dye, paper making, acetic acid, fertilizer and other production equipment, food industry and coastal facilities, and products with special requirements for intergranular corrosion resistance.
For daily life, 304 stainless steel can meet our needs, and 304 is also a stainless steel material that fully meets the food standard.


Post time: Dec-08-2022