Classification of stainless steel series
According to the composition, it can be divided into Cr-Mn-Ni (200 series), Cr-Ni series (300 series), Cr series (400 series), heat-resistant chromium alloy steel (500 series) and precipitation hardening series (600 series). 200 series: chromium-manganese-nickel 201, 202, etc .: Manganese-nickel substitutes have relatively poor corrosion resistance, and are widely used as cheap substitutes for the