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Because 201 stainless steel contains manganese, its surface color is slightly darker than that of 304 stainless steel without manganese. However, this method has obvious shortcomings, that is, when purchasing a stainless steel faucet, if there is no reference object as a comparison, it is difficult to distinguish the true from the false with the naked eye.
Scratch the shell
201 stainless steel has a higher carbon content, so it is more brittle than 304 stainless steel, but its toughness is not as good as 304. During the test, you can scratch the surface of the faucet with a knife or a sharper hard object. If it is 201, it will generally leave obvious marks on the surface, but the scratches on 304 will not be too obvious.
Check with special medicine
You can buy a special stainless steel detection potion on the Internet. Just a few drops can distinguish what stainless steel is in a few seconds. This potion is very convenient. A chemical reaction occurs to form a colored substance. This method can be implemented after purchase. If it is found that the faucet is not made of 304 material, it can be returned immediately. At the same time, this potion is also an essential item for stainless steel product buyers and stainless steel practitioners.
Check with a spectrometer
This method is the most professional and accurate, and it is not recommended for general consumers, but dealers who need to purchase in large quantities may consider testing. In addition, if the purchased faucet is very expensive, or the element content is very high, you can also find a special testing company for inspection, and they usually have a spectrometer.
