SUS630 is magnetic, and the strength of its magnetism varies with heat treatment.
Magnetism in different states:
Solution-treated state: Weak magnetism. The microstructure is primarily austenitic with a small amount of martensite, showing only slight magnetic properties.
Aged state: Noticeable magnetism. After aging treatment, the structure fully transforms into martensite, significantly enhancing magnetism. It is a magnetic stainless steel.