1. Around 1912, the United States, Germany and other countries developed martensite, ferrite and austenitic stainless steel at the same time. After about 40 years of development, in the early 1950s, global stainless steel production was about 1 million tons.
2. In the early 1950s, the US stainless steel industry took the lead in achieving civilian use. Stainless steel production gradually achieved acceleration development. After about 40 years of development, by 1990, global stainless steel production exceeded 10 million tons.
3. Since the 1990s, the development of stainless steel industry has broken through traditional markets such as Europe, America and Japan, and has begun to develop into a broader emerging market. After more than 10 years of development, by 2002, global stainless steel production exceeded 20 million tons.
4. Since the beginning of the new century, the global stainless steel industry has further accelerated its development. In the past 8 years, global stainless steel production has exceeded 30 million tons by the end of 2010, reaching a record 32 million tons. It is particularly worth mentioning that in 2006, just before the US financial crisis, that is, after only 20 years of global stainless steel production exceeded 20 million tons, it has reached more than 28 million tons. Since 1990, global stainless steel production has grown at an average annual rate of 6%.
Corrosion resistance reasons:
The chromium content exceeds 12, and over 12 will form an anti-oxidation film on the surface of the stainless steel.
The surface of the stainless steel is corroded or scratched. When chromium reacts with air, it also forms an anti-oxidation film on the surface of the stainless steel.