What is the difference between stainless steel 304 and 316?
I believe that everyone is no stranger to stainless steel. After all, many things in daily life are made by them. At the same time, many industrial hardwares are increasingly processed with stainless steel. Especially the hardware accessories used in the sea, stainless steel hardware accessories are more and more liked by consumers. 304 and 316 are the codes for stainless steel. In essence, they are all stainless steel, and they are subdivided into different types. Simply put, the quality of 316 stainless steel is greater than that of 304 stainless steel. 316 stainless steel incorporates metal molybdenum on the basis of 304. This element can further consolidate the molecular structure of stainless steel, making it more wear-resistant and resistant to oxidation. Corrosion has also increased greatly.
In today's society, building materials are made of stainless steel. In the early days, the application of stainless steel in construction was limited to specific environments. This time will introduce you to the difference between stainless steel 304 and 316, please read it carefully.
The chemical composition is different: The main difference is the content of Chromium (Cr), Nickel (Ni) and Molybdenum (Mo).
304 stainless steel doesn’t contain Mo,while SS316 contains 2-3% Mo. In addition, SS304 has a 18% Chromium and 8% Nickel content while 316 has a 16% Cr and 10% Ni.
Different performance: 304 steel can resist corrosion of sulfuric acid, phosphoric acid, formic acid, urea, etc. It is suitable for general water use, control gas, wine, milk, CIP cleaning liquid and other occasions with little or no contact with materials.
The 316L steel grade has added molybdenum on the basis of 304, which can significantly improve its resistance to intergranular corrosion, oxide stress corrosion and reduce the hot cracking tendency during welding, and it also has good resistance to chloride corrosion.
Different maintenance methods: 304 is better than 316 stainless steel in corrosion resistance, oxidation resistance and processability.
The price is different: the price of 316 stainless steel is about twice that of 304.