There are many material classifications of stainless steel, among which austenitic stainless steel refers to stainless steel with austenitic structure at room temperature, and is also the raw material of all stainless steel kitchen utensils, thermos cups and other products. When the steel contains about 18% Cr, 8%~25% Ni, and about 0.1% C, it has a stable austenite structure, which is the best choice for the raw material of the airpot vacuum flasks. The national quality inspection center tests products according to this standard. Eligibility.
There are many kinds of stainless steel materials, of which 18/8 means that this stainless steel material contains 18% chromium and 8% nickel. The materials that meet this standard meet the national 304 standard and are green and environmentally friendly products, and the products are rust-proof and corrosion-resistant.
Ordinary stainless steel cups (pots) are whitish or dark in color. If they are soaked in salt water with a concentration of 1% for 24 hours, rust spots will occur. Some of the elements contained in them exceed the standard, which directly endangers human health. Austenitic stainless steel does not release elements that are harmful to human health.
This is also the reason why the austenitic products used in stainless vacuum flasks are expensive. Many unscrupulous manufacturers use shoddy products, which are actually harming the health of consumers. Therefore, consumers should not be greedy for temporary cheapness and bring harm to their own health.
In fact, many people have been scalded by warm water in SS vacuum flasks. Why is this happening? Theoretically speaking, the normal temperature of human oral cavity is 36.2℃-37.4℃. The temperature of fifty or sixty degrees Celsius can burn the mouth, but in fact, when the mouth feels very hot and hot, the temperature of the food reaches sixty or seventy degrees. At this time, it is easy to burn the mouth or the human body, especially children.
Nowadays, the thermal insulation function of vacuum flask 304 stainless steel is getting better and better. After pouring the boiled water into the thermos cup and leaving it for half a day, the water temperature can still reach above 70 ℃, which is enough to scald people. Sometimes you have left it for a long time. Several hours have passed, and you feel thirsty again. When you feel that the water in the thermos should be drinkable, you just take a sip. Congratulations, you have been shot at this time. . Especially for some ignorant children, they can't let him drink water alone. The best thing is to put the stainless steel thermos in a place that is not easy for him to reach.
Especially the newly bought vacuum mug has good thermal insulation performance, so you must pay attention to safety when using it. It is recommended for those who use a thermos cup for the first time to pour a little water out to test the temperature when drinking water, or open the lid and cool it for a while before drinking. In short, pay more attention to safety when drinking water from a stainless vacuum flask, and do not get scalded by hot water.