Stainless steel, or ""salmon"" as it still sometimes is called, has the qualities inherent only in this look became. It is possible to distinguish it from ""fellows"", having put on some trials. It is possible to make it, having placed steel in hydrochloric solution. It is possible to resort to more difficult methods, having used physical calculations.
It is required to you
- - magnet;
- - table salt;
- - water;
- - file;
- - sandpaper;
- - copper vitriol;
- - glass with water;
- - spectrograph
Instruction
1. The most widespread way to define stainless steel is to estimate as it interacts with a magnet. The composition of stainless steel allows it ""is magnetized"" only under the influence of Foucault's currents. In usual conditions stainless steel is indifferent to magnetic field.
2. As, proceeding from the name, ""stainless steel"" is resistant to rust, it is necessary to check it from this point of view. It is necessary to make the concentrated solution of table salt in water. Then to place in it a product from steel. The next day it is possible to estimate result. The product from stainless steel will not become covered with rust.
3. For check of stainless steel on authenticity, it is possible to apply a file. It is necessary to carry out by this tool across a product cut several times. If on the ground-off surface there is a yellowness, means - it is brass.
4. There is one more way of check. It is necessary to remove from a surface of a metal product a layer by means of sandpaper. Then to apply copper vitriol on the ""smoothed-out"" surface. If the product from stainless steel, color does not change. Any other metal will change color.
5. If the product, presumably from stainless steel, served long enough whether to define and a salmon it, it is possible on appearance. The lack of a cheshuychatost, i.e. peeling and ruptures of an external covering of a product is characteristic of stainless steel. Products from such material, as a rule, are long kept by the initial presentable look.
6. Besides, on products from stainless steel, processing traces are visible. In order that the microscope is required to distinguish them. The stronger it increase, the is more noticeable traces.
7. Finally to make sure that a product from stainless steel, it is necessary to use knowledge of physical laws. One of them says: ""the body placed in a glass pushes out water according to what it was made of."" It is necessary to place a steel detail in a glass. Then, knowing how many the product weighs, to count the mass of the water which poured out from a glass. After that, it is necessary to compare data to tabular, on stainless steel. The result will be the answer to a question of material of which it is made products.