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Selection Standard for the Stainless Steel Materials of Vacuum Sports Bottle

The vacuum sports bottle industry often involves terms such as 201 stainless steel and 304 stainless steel. What are the 201 and 304 stainless sheets of steel?


1. Material analysis of stainless steel for vacuum sports bottle


We must first know what stainless steel is. The so-called stainless steel refers to steel that is resistant to weak corrosive media such as air, steam, and water, and chemically corrosive media such as acid, alkali, and salt. It is made by adding alloys of nickel, molybdenum, titanium, niobium, copper, nitrogen, and other elements.


304 stainless steel is universal stainless steel material, and its rust resistance is stronger than that of 200 series stainless steel materials. And its high-temperature resistance is also relatively good, which can be as high as 1000 to 1200 degrees.


304 stainless steel has excellent corrosion resistance and good resistance to intergranular corrosion. For oxidizing acids, it was found in experiments that 304 stainless steel has strong corrosion resistance in nitric acid with a concentration of ≤65% below the boiling temperature. It also has good corrosion resistance to alkaline solutions and most organic and inorganic acids.


2. Selection and classification of stainless steel for vacuum sports bottles


According to the composition, it can be divided into Cr series (400 series), Cr-Ni series (300 series), Cr-Mn-Ni (200 series), and precipitation hardening series (600 series). 200 Series - Chromium-Nickel-Manganese Austenitic Stainless Steel 300 Series - Chromium-Nickel Austenitic Stainless Steel 301 - Good ductility for use in formed products. It can also be hardened by mechanical processing. Weldability is great. Wear resistance and fatigue strength are better than those of 304 stainless steel. The corrosion resistance of 302 is the same as that of 304 because the carbon content is relatively high and the strength is better. 303 - It is easier to cut and process than 304 by adding a small amount of sulfur and phosphorus. 304—that is, 18/8 stainless steel. GB grade is 0Cr18Ni9.


Therefore, the best choice for stainless steel vacuum sports bottle is 304 stainless steel, but many companies use 201 stainless steel, so their prices on the same bottle are also very different. The price of a sports flask made of 304 material is higher than that of 201 material.


As a professional sports flask supplier, our steel sports flasks are made of food-level materials, allowing you to drink healthier water. With the guide water absorption device, you can drink water without raising your head to achieve a larger opening angle. Different sizes of SUS340 stainless steel bottles are suitable for different sizes of bicycles. The triangular ring cover ensures it is easy to carry and is suitable for exercise. It can also be hung on a sports backpack. For more information on stainless steel sports flasks, please contact Solidware for the wholesale of stainless steel sports bottles.

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