The main difference between food grade stainless steel and stainless steel
2022-08-20
The main difference between food grade stainless steel and stainless steel is: Food grade 304 stainless steel is a grade of stainless steel produced according to ASTM standards in the United States.The most important elements in 304 are Ni and Cr, but not limited to these two elements.Specific requirements are specified by product standards.Industry common judgment that as long as the Ni content is greater than 8%, Cr content is greater than 18%, it can be considered 304 stainless steel. Stainless Steel (Stainless Steel) is short for Stainless acid resistant Steel, Stainless Steel refers to air, steam, water and other weak corrosive medium and acid, alkali, salt and other chemical corrosive medium corrosion of Steel, also known as Stainless acid resistant Steel.The corrosion resistance of stainless steel depends on the alloying elements contained in the steel. The main alloying element in stainless steel is Cr (chromium). Only when the content of Cr reaches a certain value, the steel has corrosion resistance.Therefore, stainless steel generally Cr (chromium) content of at least 10.5%.Stainless steel also contains Ni, Ti, Mn, N, Nb, Mo, Si, Cu and other elements. 304 stainless steel is a common material in stainless steel, density of 7.93g /cm3, the industry is also called 18/8 stainless steel.High temperature resistance 800℃, has the characteristics of good processing performance, high toughness, widely used in industrial and furniture decoration industry and food and medical industry. 304 is a kind of universal stainless steel, which is widely used in the production of equipment and parts requiring good comprehensive performance (corrosion resistance and molding).In order to maintain the corrosion resistance inherent in stainless steel, the steel must contain at least 18% chromium and at least 8% nickel.304 stainless steel is a grade of stainless steel produced according to ASTM standards in the United States. 304 stainless steel is the most widely used a kind of chrome-nickel stainless steel, as a kind of steel with a wide range of uses, has good corrosion resistance, heat resistance, low temperature strength and mechanical characteristics;Good thermal processing property such as punching and bending, no hardening phenomenon of heat treatment (using temperature -196℃ ~ 800℃). Corrosion resistance in the atmosphere, if it is industrial atmosphere or heavily polluted areas, it is necessary to clean in time to avoid corrosion.Suitable for food processing, storage and transportation.It has good machining performance and weldability. Plate heat exchanger, bellows, household products (Class 1, 2 tableware, cabinets, indoor pipelines, water heaters, boilers, bathtubs), auto parts (windshield wipers, mufflers, mold products), medical appliances, building materials, chemistry, food industry, agriculture, Marine parts, etc.304 stainless steel is food grade stainless steel recognized by the country.
