| About stainless steel Stainless steel refers to alloy steels containing chromium (Cr) and nickel (Ni) in the six major elements of iron, with a Cr content of approximately 11% or more. Stainless steel is based on Fe-Cr alloy containing about 11% or more of Cr, in order to improve corrosion resistance, mechanical properties, workability, and other properties. Add Ni, Mo, Cu, Ai, Si, etc. The main raw materials are Cr and Ni, which are roughly classified into Cr and Cr-Ni, and from the metallographic structure, martensitic, ferritic and austenite. It is divided into systems. In addition, there are austenite-ferritic stainless steel and precipitation hardening stainless steel. | |||
| Classification | Cr system | Cr-Ni system | |
|---|---|---|---|
| Metallographic structure | Martensitic | Ferritic | Austenitic |
| Curability | Hardenability | Non-hardenability | Work hardening |