| Both 304 stainless steel and 316 stainless steel are American standard austenitic stainless steels, and both have resistance to weak corrosive media such as air, steam, and water, or stainless steels. In addition, 304 stainless steel is a nationally approved food-grade stainless steel, which is commonly used in stainless steel tableware, kettles, vacuum flasks, etc. In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel. Therefore, most cups are marked with 304. The density of 304 is 7.93g/cm, which is also called 18/8 stainless steel in the industry. As a widely used steel, it has good corrosion resistance, heat resistance, low temperature strength and mechanical properties; hot workability such as stamping and bending is relatively good, no heat treatment hardening phenomenon, non-magnetic, operating temperature -196℃—— 800°C. To 316 stainless steel is used in food industry, medical equipment, etc. In comparison, both of them are austenitic stainless steels. The nickel content of 316 stainless steel is about 16%-18%, while that of 304 stainless steel is only 8%-12%. The molybdenum content of 316 stainless steel is 2% higher than that of 304 stainless steel. Therefore, the corrosion resistance of 316 stainless steel is better than that of 304 stainless steel, especially the chlorine corrosion resistance. Generally speaking, 316 has more molybdenum than 304, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good. Generally, the high temperature resistance can reach 1200℃-1300℃, and it can be used freely even under very harsh conditions. Basically, there is no phenomenon of thermal expansion and contraction. If the economy permits, it is better to choose a 316 stainless steel vacuum flask. |
Insulation Cup 304 And 316 Stainless Steel Which Is Better
07/07/2021
