Commonly used insulation cup material is indeed 316 stainless steel and 304 more, and to say to the two in the end which is better? I will not hesitate to give the answer: 316 stainless steel than 304 contains a rare metal molybdenum (Mo), better corrosion resistance, higher hardness, more expensive. First of all, if you are the choice of daily use of insulation cups, food stainless steel or infants and young children using appliances, etc., it is best to choose 316 stainless steel, corrosion resistance is stronger; of course, you can also directly choose 304 stainless steel, relatively more cost-effective, a little lower requirements for life, the use of 304 stainless steel will not produce any harm; and if it is the medical treatment, instruments and other industry-specific appliances is best to use 316 stainless steel! Material. Another point to note, in the selection of stainless steel food utensils, be sure to choose food-grade stainless steel, that is, with GB 4806.9-2016 logo.
Stainless steel 316 and 304 comparison table
Stainless steel is generally made of iron as the main component, and then add some carbon compounds, nickel, chromium and other metal elements made of stainless steel grade is generally the content of these rare metals. The commonly used method of evaluating stainless steel grades is the American Iron and Steel Institute's American Standard ASTM, stainless steel 304 and 316 grades are developed according to this method.
The following I first of these two stainless steel introduction, and then focus on the comparison of these two materials of stainless steel and give insulation cup material selection recommendations.
A, 304 stainless steel
304 stainless steel is the most common stainless steel in our lives, stainless steel bowls and chopsticks, stainless steel spoons, cups, most of which are this material. This kind of stainless steel is exposed to more acid and alkali, therefore, it has good acid and alkali resistance, and high density, good-looking polishing.
304 Stainless Steel Fuguang Thermal Cup
Two, 316 Stainless Steel
316 Stainless Steel is composed of more than 304, a rare metal called molybdenum (Mo), which allows 316 to have a better corrosion resistance than 304, and is therefore generally used in the therapeutic food, machinery, heavy industry, or in high temperature environment to make parts and other industries.
316 stainless steel Fuguang thermal insulation cup
Three, comparison
1. Material composition and corrosion resistance
316 stainless steel than 304 composition of a rare element molybdenum (Mo), it is this element makes 316 stainless steel than 304 corrosion resistance. Stainless steel than 304 corrosion resistance, oxidation resistance and high temperature resistance characteristics are much stronger. For example, common food on the 304 stainless steel will not cause corrosion, but some special food, such as carbonated beverages, white vinegar, coffee, etc., 304 stainless steel on the downhill, this time on the use of 316 stainless steel, this kind of molybdenum stainless steel in the corrosion resistance to be a big cut above the general stainless steel, used to hold any food will not be corroded in the antioxidant, corrosion resistance to be better. So, 316 stainless steel insulation cup can hold more kinds of liquid.
2. Density and hardness
316 stainless steel density is 8.03g/cm^3, while the density of 304 stainless steel is 7.93g/cm^3, 316 stainless steel density than 304 density is greater, more adaptable to wear and tear of the use of harsh environments, 316 material Thermos may be used for a longer time. On the other hand, stainless steel 304 plasticity is also stronger, can be more easily made into a variety of daily utensils in life.
3. Price and use
316 stainless steel plate price of about 21,000 yuan / ton, while the price of 304 stainless steel plate is about 15,000 yuan / ton, so whether it's plate or finished appliances, 316 stainless steel and its applications to be more expensive than the 304, and some even several times more expensive. And for its own material and price reasons, 304 stainless steel is generally only used for daily life appliances, such as pots and pans, etc., while 316 stainless steel is mostly used in the medical, mechanical and other industries, but also some food utensils.
Four, suggestions and precautions
First of all, if you are the choice of daily use of insulation cups, pots and pans, etc., it is best to choose 316 stainless steel, stronger corrosion resistance; of course, you can also choose 304 stainless steel, relatively more cost-effective, a little less demanding of life, the use of 304 stainless steel will not cause any harm; and the use of 304 stainless steel will not cause any harm. Stainless steel will not produce any harm; and if it is medical, instruments and other industry-specific apparatus is best to use 316 stainless steel material. Another point to note, in the selection of stainless steel food utensils, be sure to choose food-grade stainless steel, that is, with GB 4806.9-2016 logo. GB 4806.9-2016 is the national standard for stainless steel tableware, clearly stipulates the contact with food stainless steel to achieve what standards, 304 stainless steel in line with the standard stainless steel is the lowest grade.