1, different specifications: commonly used stainless steel plates are divided into 20 1 and 304. Actually, the ingredients are different. The quality of 304 is better, but the price is more expensive, and 20 1 is worse. 304 is imported stainless steel plate, and 20 1 is domestic stainless steel plate.

2. Different chemical formulas: the chemical formula of 20 1 is 1Cr 17Mn6Ni5, and the chemical formula of 304 is 06cr19ni10; Their main differences are nickel and chromium, 304 is 19 chromium and 10 nickel, while 20 1 is 17 chromium and 5 nickel.

3. Different performance: due to the different nickel content, the corrosion resistance of 20 1 is far less than that of 304, and the acid and alkali resistance of 20 1 is also less than that of 304. Because the carbon content of 20 1 is higher than 304, 20 1 is harder and more brittle than 304, and 304 has better toughness. Cut with a hard scraper.