According to the metallographic structure, it can be divided into 1: Ferritic stainless steel (400 series), chromium stainless steel, mainly represented by Gr13, G17, Gr27-30
Austenitic stainless steel (300 series), chromium-nickel stainless steel, mainly represented by 304, 316, 321, etc.
Martensitic stainless steel (200 series), chromium-manganese stainless steel, high carbon content, mainly represented by 1Gr13, etc.
2: Stainless steel is classified according to the label
One: Austenitic stainless steel (201 304 310s 316 etc.)
Two: Super austenitic stainless steel (904L, 254 SMo)
3. Martensitic stainless steel (410, 420, 431)
4. Ferritic stainless steel (430, 434)
5. Austenitic-martensitic duplex stainless steel (2205, 2304, 2507)
6. Precipitation hardening stainless steel (17-4PH, 17-7PH, 15-7Mo)