3 16 stainless steel has stronger corrosion resistance. 3 16 stainless steel is recommended if drinking cups are often used. 3 16 stainless steel is a kind of stainless steel. Due to the addition of Mo element, its corrosion resistance and high temperature strength have been greatly improved. High temperature resistance can reach 1200~ 1300 degrees, and it can be used in harsh conditions.

In terms of heat resistance, 3 16 stainless steel also has great advantages. Use intermittently when the temperature is below 1600 degrees, and use continuously when the temperature is below 1700 degrees. It also has good oxidation resistance. But if it is in the temperature range of 800~ 1575 degrees, it is not recommended to use it continuously, but it can be used continuously outside this temperature range. 3 16 stainless steel is a rare metal, so 3 16 stainless steel is more expensive.

Tips for selecting thermos cups

1, depending on the material: there are many kinds of stainless steel, such as 20 1 steel, 202 steel and 304 steel. , commonly used in the market to make thermos cups. 304 steel is food grade. A good thermos cup is generally made of 304 steel inside and outside. This material is better and contains no harmful heavy metals.

2. Look at the cup body: observe the quality of the inner and outer surfaces of the thermos cup. A good thermos cup generally has a smooth surface inside and outside the liner, without scratches or protrusions; At the same time, we should also pay attention to whether the cup mouth is smooth and whether there is a weld.

3. Look at the heat preservation performance: pour hot water into the thermos cup, wait for 2 ~ 3 minutes, and touch the cup surface. If there is obvious temperature rise, it means that the vacuum heat insulation performance is poor.

4. Smell the temperature: Open the thermos and smell it. If it is a qualified product, because the materials used are food grade, there is generally no odor.