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").