Stainless steel is generally a general term for stainless steel and acid-resistant steel. Stainless steel refers to steel that is resistant to corrosion by weak media such as atmosphere, steam and water, while acid-resistant steel refers to steel that is resistant to corrosion by chemically corrosive media such as acid, alkali, and salt.
Stainless iron is a kind of stainless steel, the models are: 409 410 430 444, it belongs to martensitic and ferritic stainless steel, magnetite will have magnetism, austenitic stainless steel has 201 202 304 321 316L and so on.
Stainless iron is a metal based on chromium and iron! Its hardness is high! Corrosive! The use area is not as wide as stainless steel!
Stainless steel is a metal based on nickel and chromium! Its flexibility is better and not easy to rust!
Stainless steel is non-magnetic or weakly magnetic, stainless iron has magnetism, ferritic stainless steel and martensitic stainless steel are called stainless iron, and generally speaking, stainless steel refers to austenitic stainless steel, so in general stainless steel Iron is not as rust resistant as stainless steel.
Compared with stainless steel, stainless iron mainly depends on whether it contains nickel! Stainless iron is ferritic stainless steel. Stainless iron contains chromium and does not contain nickel, so it has a certain anti-corrosion ability! Stainless iron is generally considered to be ferromagnetic stainless steel, and stainless steel contains both chromium and nickel. Since nickel is a relatively stable element, its corrosion resistance is naturally much stronger than that of stainless iron! Since the price of nickel is more expensive, stainless steel is higher than stainless iron in terms of cost. In addition to the difference in corrosion resistance, the price of stainless steel is 1/4~1/3 higher than that of stainless iron (for reference only) Discrimination: Since nickel is a diamagnetic element, a relatively simple way to distinguish it is to see if it has strong magnetism, that is, use a magnet to attract it!
The so-called "stainless iron" refers to the recycling of scrap iron, lead, steel, etc., which is processed by the secondary furnace, and then processed by de-magnetization. The traditional detection method is to use magnets, and this product cannot be distinguished by traditional methods. Of course, it is a matter of concealing the sky and crossing the sea, which has blocked many engineering materials, so it has entered one decoration site after another, and boarded one after another luxurious curtain wall. Stainless iron occupies about 65% of the market share, while the real national standard SUS304 stainless steel rivet products have a low market share due to their high prices.
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