Is 316 Stainless Steel Thermos Really Better Than 304?
Mar 26, 2022
304 and 316 stainless steel materials are two stainless steel materials widely used in our daily life. In the market, the price of 361 stainless steel vacuum flasks is generally higher than that of 304 vacuum flasks. It is difficult for us to distinguish the two materials with the naked eye.
Many vacuum cup merchants emphasize that 316 stainless steel is more durable and safer. Is it true that 316 is better than 304 texture? Let's take a look at their differences first.
What is 304 stainless steel?
The density of 304 stainless steel is 7.93 g/cm³, and it is also a nationally recognized food-grade stainless steel. The standard of 304 stainless steel is that it must contain more than 18% chromium and more than 8% nickel content, so it is also called 18/8 stainless steel.
The service temperature of 304 stainless steel is between -196 °C and 800 °C, and it is characterized by good hot working performance, high toughness, good corrosion resistance and heat resistance.
The main scope of use of 304 stainless steel:
Kitchen equipment, food industry, electrical appliances, auto parts, medical appliances, building materials, ship parts
What is 316 stainless steel?
316 stainless steel has a density of 8.03 g/cm³ and has similar physical properties to 304 stainless steel. In terms of composition, the standard of 316 stainless steel is that it must contain 16% to 18% chromium and 10% to 14% nickel content, so it is also called 18/10 stainless steel.
Due to its low carbon content and 2% to 3% molybdenum, 316 stainless steel has better corrosion resistance than 304. In addition, the high temperature resistance of 316 stainless steel can reach 1200 ℃ ~ 1300 ℃.
The main application scope of 316 stainless steel:
Marine ships, medical surgical equipment, food industry, outdoor electrical appliances, chemical equipment, coastal environment equipment
Insulation cup stainless steel material selection
If it is used in shipbuilding, it is indeed better to choose 316 stainless steel because it is more resistant to corrosion and is suitable for harsh outdoor environments. But as a thermos cup for daily use, 304 stainless steel is actually enough to meet our needs.
We know that the use of thermos cups to make tea, hold fruit juice, milk or acidic and alkaline beverages not only affects the taste and is easy to deteriorate, but also tends to produce dirt in the inner tank of thermos cups for a long time, and then chemically react with metals, resulting in harmful pollution. substance.
Therefore, the safe and durable way to use it is to use a thermos to hold water. The temperature of general household hot water is about 100℃, while the high temperature resistance standard of 304 stainless steel of 800℃ is much higher than that for household use.
In general, 304 and 316 stainless steel thermos will not affect your health if you use the thermos correctly. In contrast, the 304 thermos is more cost-effective and more practical.
