What material of stainless steel corrosion resistance
1, 1912 years or so, countries such as Britain, the United States, and Germany, almost at the same time developed martensite and ferrite and austenite stainless steel. After about 40 years of development, in the early 1950 s, the global output of about 1 million tons of stainless steel.
2, in the early 1950 s, the United States take the lead to achieve the MinYongHua stainless steel industry, stainless steel production gradually realize the acceleration of development, and after about 40 years of development, by 1990, global stainless steel production reached 10 million tons.
3, since the 1990 s, break through the traditional markets such as Europe and the United States, Japan, stainless steel industry development to the broader development of emerging markets, after 10 years of development, by 2002, global stainless steel production reached 20 million tons.
4, since entering the new century, further accelerate the development of the global stainless steel industry, only in the past eight years, by 2010, global stainless steel production has reached 30 million tons, a record 32 million tons. Especially worth noting that in the United States before the financial crisis in 2006, which is only four years after the global stainless steel production reached 20 million tons, has reached more than 2800 ten thousand tonnes. Since 1990, the annual global stainless steel production increased to 6%.
Corrosion reasons are introduced:
Chromium content in more than 12, more than 12 will form a layer of oxidation film on the surface of stainless steel.
Stainless steel surface corrosion or scratch, chromium in REDOX reaction and air at the same time, also on the surface of stainless steel recycled into a layer of oxidation membrane.