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Genuine stainless steel? Just trying! 2

  • Author:E-BON
  • Source:E-BON
  • Release on:2017-08-28
Identification with copper sulfate
The steel of the oxide layer was removed, put a drop of water, rub rub after copper sulfate, such as discoloration, usually stainless steel; such as purple red, nonmagnetic high manganese steel, magnetic for ordinary steel or low-alloy steel.

For the special properties of steel, we need to take the following three methods for identification. E-BON the most excellent stainless steel company, which provide you with Hammered Moscow Mule Copper Mugs.

Identification of flowers
The identification of grinding flowers is to grind the stainless steel on the grinder and observe its spark. Such as the spark was streamlined, and there are more dense flowers, namely high manganese containing high manganese steel or manganese steel; if no flower is chromium or nickel chromium stainless steel.
Annealing identification
Cold worked chromium nickel stainless steel, if it is magnetic, is desirable for small pieces to be burned red in the fire to allow it to cool naturally or put in water (annealed), and generally, after annealing, the magnetism will be markedly weakened or completely disappeared. However, some chromium nickel stainless steels, such as Cr18Ni11Si4AlTi steel and Cr21Ni5Ti steel, contain considerable amounts of ferritic elements in the steel, and a substantial portion of their internal structure is ferrite. 

Therefore, even in a hot working state, there is also a magnetic. E-BON the stainless steel specialist, Stainless Steel Watermelon Baller china.

Chemical qualitative identification
Chemical qualitative analysis is a method of identifying whether or not there is nickel in a magnetic stainless steel. The method is to dissolve a small piece of stainless steel in Wang Shuizhong, dilute the acid solution with pure water, add the ammonia water and neutralize it, and then gently inject the nickel reagent. 

If there is a red velvet like material on the surface of the liquid surface, which indicates that nickel containing stainless steel; if there is no red velvet like material, it is proved that the nickel free stainless steel (stainless steel but the nickel content in the low, generally only a few percent, the nickel content is not easy to determine how much exposure or general, must use the standard to the sample experiments after master).

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