Is 304 thermos cup harmful to the human body

34 thermos mugs made of non-toxic. 04 Stainless steel is a general-purpose stainless steel material.

The state is approved as food-grade stainless steel.

It also has good high temperature resistance, corrosion resistance and high temperature performance. Relatively inexpensive and consumer recognized. In order to maintain the inherent corrosion resistance of stainless steel, steel grades must contain more than 18% chromium and more than 8% nickel.

So most of the cups are labeled 304. Selection tips for thermos cups Observe the quality of the inner and outer surfaces of the thermos cup. Generally, the inner and outer surfaces of a good thermos cup are smooth, without scratches and bumps.

At the same time, pay attention to whether the cup mouth is smooth and whether there are welds. Test the thermal insulation performance of the thermos cup. Fill the cup with hot water, screw the lid on, let it sit for a few minutes, and then touch the outer surface and bottom of the cup with your hands.

If there is a significant burning sensation, it means that the thermal insulation performance of this cup is poor. If there is no noticeable feeling, the insulation performance is basically good. Generally speaking, the normal holding time of the thermos cup is more than 6 hours.

<> it depends. Whether a material that comes into contact with food is harmful depends on the amount of harmful substances it may precipitate. Otherwise there is no point.

In fact, at least half of the stainless steel material is harmful to the human body, but it does not enter the body through food. Whether the stainless steel thermos cup is harmful or not, in addition to stainless steel, the materials of the cup lid and sealing ring are within the detection range. All contain harmful substances, and the key depends on the speed and quantity of precipitation into food.

The material of 304 stainless steel does not contain components that will precipitate harmful substances beyond the standard, so it is generally considered that qualified 304 stainless steel must meet food safety standards. And the raw material of stainless steel is not something that can be produced by a small workshop. So it's relatively safe.

Lids and seals are often the areas that need attention.

1. The reason why the thermos cup 304 is not kept warm is mainly because the vacuum layer between the two shells is destroyed. Therefore, the thermos cup has lost the function of heat preservation. 2. The principle of the thermos cup is the same as that of the thermos bottle, they all use a double-layer shell, and the air between the two shells is pumped out to become a vacuum environment, and the heat propagation ability of the vacuum is very poor, which reduces the convection and conduction of heat energy to a large extent.

Healthy. The stainless steel thermos cup is made of food-grade 304 stainless steel to ensure that the amount of heavy metal dissolved in the thermos cup filled with water does not exceed the standard, including lead. At the same time, the inner lid of the regular stainless steel thermos cup is made of PC material, which has no taste and will not be deformed when boiled in boiling water.

The rubber ring is made of silica gel, which is also a non-toxic material.

It has many advantages such as good thermal insulation performance, light weight, anti-rupture, anti-corrosion, anti-extrusion, heat resistance and rapid change resistance, and convenient use.

Precautions: A newly bought thermos cup should be cleaned with neutral detergent and warm water before use, and never use alkaline detergent, alkaline detergent will have a bad impact on your cup and affect the service life of your cup.

Don't use too much force when twisting the lid of the cup, as long as you make sure that there will be no leakage after tightening, using too much force may cause the screw of your cup to fail, and then affect the carrying.

It is best not to add liquids such as juice and milk that are easy to deteriorate, if the cleaning is not timely, it will leave a bad smell in the cup and it is difficult to get rid of the smell.

The above content reference: Encyclopedia - stainless steel thermos cup.

316 stainless steel thermos mug is harmless to the human body.

316 stainless steel thermos cup is harmless to the human body under normal use, otherwise there would not be so many food-grade 316 stainless steel containers on the market; However, it is not recommended to use 316 stainless steel containers to hold strong electrolytes such as soy sauce, salt, vinegar, etc.

because the electrolyte reacts with stainless steel, causing harmful substances to be dissolved.

Therefore, we must use stainless steel containers correctly and avoid often using stainless steel thermos cups or stainless steel thermos bottles for drinking water, so as not to cause the human body to absorb too many trace elements.

Causes poisoning or illness. Ingredients that are not suitable for soaking in thermos cups are milk, acidic drinks (lemonade.

plum soup), carbonated drinks.

Traditional Chinese medicine, soy milk, etc., should not be put in a thermos cup.

316 stainless steel thermos mug

The best stainless steels on the market are 304 and 316, which are both food grade. 316 stainless steel is made of iron-chromium alloys and other metallic elements.

Made. These elements are beneficial to the body and will not affect physical development, and children can also use 316 stainless steel with confidence. There are many stainless steels on the market, which are claimed to be 304 and 316. When purchasing, it must be purchased through official channels to ensure its authenticity.

The 316 stainless steel thermos mug itself is safe and hygienic. The main thing is to pay attention to some things that should not be soaked in the thermos cup in daily use. 304 stainless steel.

Suitable for food grade, 316 is higher than mainly used in medical equipment. Of course, it can also be used for Class I and Class II cutlery, but the cost is slightly higher.

Innocuity. 304 stainless steel has high corrosion resistance, high plasticity and toughness at low temperature, room temperature and high temperature, as well as good cold work forming and weldability. Therefore, there is no problem with the thermos cup 304 used to hold water, and it will not precipitate poisons harmful to the human body.

In the GB9684-2011 national food safety standard, there are clear requirements for stainless steel materials for tableware. Normally, in addition to chromium elements, nickel, molybdenum, manganese, copper, nitrogen, vanadium and other alloying elements are specially added to stainless steel to improve the mechanical properties and corrosion resistance of stainless steel, but lead, cadmium and arsenic are strictly limited as harmful impurity elements in stainless steel.

The 304 thermos cup is not poisonous. 304 stainless steel.

It is a general-purpose stainless steel material, which is a food-grade stainless steel approved by the state.

It is also relatively good in terms of high temperature resistance, with good corrosion resistance and high temperature performance; **It is also relatively cheap and recognized by the majority of consumers, in order to maintain the inherent corrosion resistance of stainless steel, the steel grade must contain more than 18% chromium and more than 8% nickel. As a result, most of the cups are labeled 304.

Thermos cup purchase skillsObserve the quality of the inner and outer surfaces of the thermos cup, the surface of the inner and outer tank of a good thermos cup is generally smooth, without scratches and bumps, and at the same time, pay attention to whether the mouth of the cup is smooth and whether there are welds.

Test the thermal insulation performance of the thermos cup, pour hot water into the cup, tighten the lid of the cup, let it stand for a few minutes, and then touch the outer surface and the bottom of the cup with your hands, if there is an obvious burning sensation, it means that the heat retention of the cup is relatively poor, if there is no obvious feeling, it means that the thermal insulation performance is basically good. Generally speaking, the normal holding time of the thermos cup is more than 6 hours.

*Qualified 304 thermos mug is non-toxic** and can be used safely.

304 is a general-purpose stainless steel material, which has good processing performance and corrosion resistance, and is widely used in food and medical industries. As long as the 304 thermos cup meets the safety and quality standards, it can be used with confidence.