Selection of 304 and 316 stainless steel thermos cups and comparison of holding times

Advantages of 316 stainless steel thermos cup
It is better to choose 316 stainless steel for the thermos cup. The main reasons are as follows:

1. 316 stainless steel has higher corrosion resistance and heat resistance

Due to the addition of molybdenum, 316 stainless steel has higher corrosion resistance and heat resistance. Generally, the high temperature resistance can reach 1200~1300 degrees, and it can be used even under very harsh conditions. The high temperature resistance of 304 stainless steel is only 800 degrees. Although the safety performance is good, the 316 stainless steel thermos cup is even better.

2. 316 stainless steel is safer

316 stainless steel basically does not experience thermal expansion and contraction. In addition, its corrosion resistance and high temperature resistance are better than 304 stainless steel, and it has a certain degree of safety. If the economy allows, it is recommended to choose a 316 stainless steel thermos cup.

3. 316 stainless steel has more advanced applications

316 stainless steel is used in the food industry, medical equipment and other fields. 304 stainless steel is mostly used in kettles, thermos cups, tea filters, tableware, etc. It can be seen everywhere in home life. In comparison, it is better to choose 316 stainless steel thermos cup.

Analysis of insulation problems of thermos cups
If the thermos cup is not insulated, there may be the following problems:

1. The cup body of the thermos cup is leaking.

Due to problems with the cup material itself, the thermos cups produced by some unscrupulous merchants have defects in the craftsmanship. Pinhole-sized holes may appear on the inner tank, which accelerates the heat transfer between the two cup walls, causing the heat of the thermos cup to dissipate quickly.

2. The interlayer of the thermos cup is filled with hard objects

Some unscrupulous merchants use hard objects in the sandwich to pass them off as good ones. Although the insulation effect is good when you buy it, over time, the hard objects inside the thermos cup react with the liner, causing the inside of the thermos cup to rust. , the thermal insulation performance becomes worse.

3. Poor craftsmanship and sealing

Poor craftsmanship and poor sealing of the thermos cup will also lead to poor insulation effect. Observe whether there are gaps in the bottle cap or other places, and whether the cup lid is tightly closed. If there are gaps or the cup lid is not tightly closed, etc., the water in the thermos cup will quickly become cold.

The insulation time of the thermos cup
Different thermos cups have different insulation times. A good thermos cup can keep it warm for about 12 hours, while a poor thermos cup can only keep it warm for 1-2 hours. The average heat preservation time of a thermos cup is about 4-6 hours. When purchasing a thermos cup, there will usually be an introduction explaining the insulation time.