What is stainless steel?Are stainless iron and stainless steel the same thing?

During the recent period of time, the update of the article about water cups may be interrupted, please forgive me.Because the editor is very busy during this time, after all, the editor is not a professional writer, there is still a lot of work to be done in daily life, and I also need to receive customers to negotiate projects.In addition, it has been almost 2 years since the editor started to create articles about water cups.In the past two years, the editor has never known how to create and now hopes that each article can be meaningful and can provide more valuable information to friends from the perspective of scientific struggle.

After creating more than 700 articles, the editor is also a little powerless, which also shows that the ability of the editor is really limited.Even worked in the water glass industry for many years.Although a lot has been written, there are still some content about production or content about craftsmanship that the editor dare not touch.Recently, due to a project, Editor came into contact with stainless iron, so today Editor will share with friends what is stainless iron? Is stainless iron the same as stainless steel?

First of all, the editor can answer for sure that stainless iron is not the same as stainless steel.

What is stainless steel? Stainless iron is made by recycling scrap iron, lead, steel, etc. through secondary reprocessing and demagnetization.

What is stainless steel?Stainless steel is the abbreviation of stainless acid-resistant steel, and the type of steel that is resistant to weak corrosive media such as air, steam, and water, or has rust properties, is called stainless steel.

Well, we roughly know what is stainless steel and what is stainless steel, so what is the difference between the two?This mainly depends on the content of chromium in stainless iron and stainless steel.Because chromium has excellent stability, the higher the chromium content, the stronger the corrosion resistance of the material.The content of chromium in stainless iron is negligible, even if there is some chromium content, it is the chromium carried in the material afterward;The content of chromium in stainless steel is usually above 12%, so stainless steel has strong corrosion resistance.Generally speaking, stainless steel is not easy to rust, and stainless steel will still rust.

Because the stainless iron has been demagnetized, the suction on the surface will be very small, and some are not even obvious.Because the editor mentioned in the previous article that the way to identify 304 stainless steel is to use magnets, if there is no magnetic force to indicate that the material is 304 stainless steel, then it is obviously inaccurate to identify stainless steel and stainless iron through magnets, and it is only suitable for daily use. When identifying these two materials, we will use the chemical reaction of the potion or the salt spray test to test, one is fast and the other is more thorough.

So what numbers will stainless steel be represented by?For example, SUS430, SUS403, SUS444, etc., I will not list the specific editors one by one. I believe you can search a lot through the Internet.Stainless steel is usually SUS304, SUS316, etc.

Is stainless iron food grade?At this point, based on my experience and knowledge, stainless iron is not food grade.If you have different opinions, you are welcome to provide evidence and let the editor learn.The editor also has a detailed description in the previous article about the consequences of long-term contact between non-food-grade metal materials and food.

Is stainless steel food grade?Not all stainless steel is food grade.At present, the expensive stainless steel SUS304/SUS316 used as water cups and kitchen products are all food grade.