630 stainless steel is a martensitic precipitation hardening type stainless steel. The performance characteristic of 630 stainless steel is that it is easy to adjust the strength level, which can be adjusted by changing the heat treatment process. Martensitic transformation and aging treatment to form precipitation hardening phase are its main strengthening methods. 630 stainless steel has good attenuation performance, strong corrosion fatigue resistance, and water drop resistance.