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FAQ

  • Q How can I tell if my stainless steel products made of 201SS or 304SS ?

    A There are several methods to tell if product is actually made of 304SS.
    1) Use a magnet. 201SS has stronger magnetism due to the higher manganese containing.
    2) Use a knife to scratch the surface, 304SS made product is more difficult to get scratched.
    3) Find some professional test liquid, different materials will cause difference chemical reaction.
    4) The most professional method is to use a Spectroscopic detector, end user may not be able to find this tool conveniently.
  • Q Surface color

    A 201 stainless steel contains higher Manganese and this element causes the towel rack surface more dark, but this difference is too tiny and users may not be able to tell, especially for mirror polished frame.
    In conclusion, 201 stainless steel has lower price, better durability and hardness, while 304 stainless steel has higher price, and better corrosion resistance.
  • Q Corrosion Resistance capable comparison

    A b2
    When we compare the chemical content of 201 stainless steel and 304 stainless steel show the lower Chrome in 201 stainless steel than 304 stainless steel is about 2%. This makes the corrosion resistance of 201 stainless steel is lower than 304 stainless steel.
    Surface pitting resistance is determined mainly by Chrome elements and Sulfur (S). Chromium makes stainless steel more resistant to corrosion, while the Sulfur reduces the resistance of corrosion. In chemical content, 2 kind of Stainless Steel has the same rate of Sulfur element. So pitting resistance on the surface of 201 stainless steel is lower than 304 stainless steel.
  • Q Durability and capable processing

    A b1
    Density of 201 stainless steel is lower than 304 stainless steel but the durability of 201 stainless steel is higher 10% then 304 stainless steel. Due to the ability to stretch is the same with 304 stainless steel, 201 stainless steel is similar properties as 304 in the process of bending, shaping and flattening. But in another way, Stainless Steel 304 is still more flattening than 201 stainless steel. (This is due to the effects of Manganese element on 201 stainless steel, and it makes 201 stainless steel harder than 304 stainless steel)
  • Q About Price

    A
    Generally, the price of 201SS is lower than 304SS.
    By the situation of the continuously rising prices of nickel, stainless steel products which contained low nickel content, low prices is really attractive. And the 201 stainless steel is a suitable choice. Grade of 201 stainless steel is gaining large of market, where 304 stainless steel is  the main choice. 201 stainless steel has a low and stable prices because it uses Magan alternative to Nickel. So, it makes 201 stainless steel has many similar properties and characteristic as 304 stainless steel and has an appearance as same as 304 stainless steel appearance.
    The stainless steel is a type of steel that contains more than 11% chrome, so stainless steel has a film self-protect against corrosion. Nickel also known as the main factor to bring stability to the Austenitic phase and capable of easy processing to stainless steel.
    304 stainless steel has a minimum content of Nickel of 8%. In elements which formed to Austenitc, there are many elements can substitute for Nickel to create resistance to corrosion. For example: Chrome (Chrome is the main elements that makes corrosion resistance of stainless steel), Manganese (also contributes to stable Austenitic phase), Nitrogen also contribute to hardness, Copper (Cu) also contributed to Austenitic phase stability.
    In 201 stainless steel, Manganese was used as the main element to replace Nickel in a 2:1 ratio. We can see by the following chemical composition:
    + Stainless steel 201: 4.5% Niken and 7.1% Mangan
    + Stainless steel 304: 8.1% Niken and 1% Mangan
    With this composition as above have reduce the raw cost material to produce a 201 stainless steel. This is a first advantage of 201 stainless steel.

  • Q Comparison between 201SS and 304SS stainless steel.

    A As we all known, all stainless steels contain more than 50% iron and at least 11% chromium, each grade has a different composition of other metals, giving it unique properties, strengths, and weaknesses. Below is differences between 201SS and 204SS
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