Question 1: Can I ask why people say the SUS 304 is not something to be magnets, but on a number of product markets for components are 304 stainless steel magnet but still why? (Client: Mr Hung - Le Thi Rieng Street, Thoi An Ward, District 12, Ho Chi Minh City).

Answer: Many thanks very interesting question of Mr Hung. The company's representatives would like to answer the following notes: Basically, if it is true that 304 stainless steel will not be attracted to the magnet in the words of the note is completely accurate. However, as the notes reflects the market still has some stamping products stating the product composition is inox 304 which is still a magnet, it can be explained through the following cases: 

- First: True composition is stainless steel SUS 304. Although the product is made ​​of stainless steel SUS304 major proportion of alloy composition is inox iron (Fe, about 80%, depending on the type of stainless steel), in stainless steel machining processes occurring activities such as cutting, welding, molding made ​​from stainless steel panels that stretch small changes in the physical properties of structural materials contaminated resulting magnetic stainless steel in areas affected it should be in contact with the magnet will be attracted to the magnet. Typically, this occurs when the gravity is very weak and uneven in each position on the product. To examine this phenomenon is true or not, the simple truth is, for example, for products branded SUS304 stainless steel pot Thaphafac example, when we put the magnet in contact with the body and rim slightly sucked pot market but when put magnets to the bottom of the pot is completely unabsorbed. 

- Second: Yeah composition is SUS 304 stainless steel but a place where there is smoking. Maybe in the process of machining, welded, mounted by several women complained of iron materials (such as screws ...) but outside we do not see it at or adjacent to these locations are still attracted to the magnet. 

- Third: Some manufacturers stamp dishonest labels, stainless steel components may constitute the product that is not yet stamped SUS304 stainless steel is 304 so if the magnet is pretty strong suction force suck equally in the position of the product (if it is stainless steel SUS430).


Question 2: Please tell me on a some of stainless steel products with a 100% stainless steel stamping that mean? (Mrs Lanh - Tuy Hoa City - Phu Yen Province).

Answer: This is a very interesting question. Actually we do not know what 100% stainless steel and manufacturers some look like they want to convey the message that is stainless steel rather than iron compounds or doped. Actually this is a way of thinking "folk" rather than science. Because of the nature of the alloy with stainless steel components are iron (Fe) accounts for about 80% are other elements such as chromium (Cr), Cabon (C), manganese (Mn), and depending on the density ... this sub-components plus the heating process that produces metallurgical stainless steel products with different clothes and of course, the quality varies. So one can not say that is 100% stainless steel. Even gold (Au), although technology has excellent metallurgical where it is not possible to split into 100% pure gold; people really want to remove impurities to improve the purity of gold, but in terms of gold, the usual techniques are only four of nine ie 99.99% gold and 0.01% impurities. Bottom line: if you say 100% stainless steel, it is like saying "pure cane juice" so although it includes sugar cane juice sugar cane juice and ice. 


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