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What is the Difference Between Stainless Steel 304 and 316?

Apr. 02, 2020

In our daily life, stainless steel is a very common product material, like stainless steel pots and pans are often used in daily life. The use of stainless steel is very wide, ranging from small objects of stainless steel to stainless steel construction materials, but stainless steel is just a general term for a class of materials. Generally speaking, the most common types of stainless steel are stainless steel 304 and stainless steel 306, but what is the difference between the two? Is there any way to distinguish the two? The following 316 Stainless Steel Sheet Factory is for everyone Briefly introduce.

The first thing to say is the question of food grade. People often buy stainless steel items in life, 304 is not food-grade. In terms of materials, stainless steel 304 does reach food grade. There are three common types of food grade in the market, namely 304, 316 and 430 stainless steel. 304 is usually small household appliances or water cups, 316 is used in medical equipment, 430 is stainless steel used as a knife. But one thing that deserves everyone's attention is that the so-called food grade not only means that the material has reached the food grade, but also includes the standards for its production process.

The second issue to be addressed is corrosion resistance. For different stainless steel materials, there must be a certain difference in corrosion resistance. Otherwise, 304 can only be used as a daily household appliance, and 314 can be used in medical equipment. So is 316 or 304 stainless steel better corrosion resistance? In general, there is no big difference between them, but if the chloride ion content in the medium is very high, 316 Stainless Steel Sheet will It is slightly better than 304 stainless steel, and it is more suitable. This is the reason why 316 stainless steel is selected for medical equipment.

316 Stainless Steel Sheet

316 Stainless Steel Sheet

So what method can be used to distinguish the type of stainless steel? First, it can be distinguished from the color. The surface color of stainless steel that has been acid-washed is silvery white and very smooth. The color of stainless steel that has not been acid-washed is slightly darker. The colors displayed on stainless steel of different materials are not the same.

The second is to use stainless steel to identify stainless steel. Because stainless steel contains chromium, it can be attracted by magnets in any state; but stainless steel with higher manganese content is non-magnetic; the situation of chrome-nickel-nitrogen stainless steel is slightly more complicated, it can be absorbed by iron, some are not. So different types of stainless steel are still very easy to distinguish.

The above is a brief introduction of 304 Stainless Steel Coils Manufacturer for stainless steel 304 and stainless steel 316. From this we can know that the ingredients contained in different types of stainless steel are different, not exactly the same, and different types of stainless steel are used. The situation is not the same, and the role it has is also very different.

Choosing the right stainless steel for this purpose is one of the things we need to pay attention to in daily life. It is not that we can choose it randomly. We must determine whether it reaches the food grade and whether it can be used reasonably in life. What do you think of different types of stainless steel?

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