The difference between these two stainless steel bars is the following points


1. Different chemical compositions

304 is cover stainless steel, its material composition is OCr18Ni9; 316L is austenitic stainless steel, its material composition is OOCr12Mo2Ti.


2. Different performance

304 steel, which is resistant to corrosion such as sulfuric acid, phosphoric acid, formic acid, urea, etc., is suitable for less corrosive or non-contact materials such as general water, control gas, wine, milk, CIP cleaning fluid, etc.

316L steel is based on 304 and adds molybdenum element, which can significantly improve the resistance between corrosion and stress corrosion oxides and can reduce the tendency of hot cracking during welding. It also has good resistance to chloride corrosion. It is often used in pure water, distilled water, medicines, sauces, vinegar and other occasions that have high hygiene requirements and highly corrosive media. The price of 316L is almost twice that of 304.


3. Different maintenance methods

304 stainless steel rod: 18Cr-8ni-0.08C has corrosion resistance, oxidation resistance and good processability, strong oxidation resistance and acid resistance, can be stamped, and can be used to make containers, tableware, metal furniture, architectural design and decoration, and Medical and sanitary appliances; 316 stainless steel: 18cr-12ni-2.5Mo for seaside construction, ships, nuclear power development, chemical and food safety equipment, etc.

Comparative analysis common This not only enhances the corrosion resistance to chemical hydrochloric acid and ocean, but also enhances the corrosion resistance to brine salt solutions