How to distinguish carbon steel from stainless steel? Following the Carbon Steel Pipe Fittings Supplier would like to share with us.
Stainless steel usually refers to alloy steel with a certain anticorrosive ability. Its main chemical components are Ming element and nickel element.
The principle of anticorrosion is simply said to be: enough Ming element and nickel element and oxygen in the air on the surface of the metal to form a dense oxidation film, prevent the oxidation of iron (rust) the most obvious is the corrosion resistance of the atmosphere is "not rust", stainless steel will not rust. The three can be distinguished, carbon steel is generally black or polished bright color, stainless steel is also white.
They are also different in magnetism. There is no difference between carbon steel and galvanized steel, stainless steel generally does not have magnetic, but not absolutely, austenite does not have magnetic, but ferritic does, but also relatively weak.
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Analysis of the difference between carbon steel and stainless steel:
Ordinary steel is carbon steel, that is, iron - carbon alloy. According to the carbon content, it is divided into low carbon steel (to be known as wrought iron), medium carbon steel and cast iron. Generally, those containing less than 0.2% carbon are called low carbon steel, commonly known as wrought iron or pure iron: those with a content of 0.2-1.7% are called pig iron with a content of 17% or more.
Although the chromium content in steel is more than 12.5%, steel with higher resistance to corrosion by different media (brew, alkali and salt) is called stainless steel. According to the structure inside the steel
Condition, stainless steel can be divided into martensite body. Iron type, austenitic type, iron cable type austenitic type, precipitation hardening type stainless steel, according to the national standard gb3280-92 provisions, a total of 55 provisions.
In our daily life, we are exposed to a lot of yi type stainless steel (some people call it nickel stainless steel) and markov type stainless steel (some people call it "stainless iron").
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