Free sample Cold rolled 202 stainless steel coil rust reason

What is the reason for the rust phenomenon of Free sample Cold rolled 202 stainless steel coil?

1. Chloride ions exist in the use environment

Chloride ions exist widely, such as salt/sweat/seawater/sea breeze/soil and so on. In the presence of chloride ions, stainless steel corrodes rapidly, even more than ordinary low carbon steel.

2. No solution treatment

The alloying elements are not dissolved into the matrix, resulting in low alloy content in the matrix structure and poor corrosion resistance.

3. This material without titanium and niobium has a natural tendency to intergranular corrosion

The addition of titanium and niobium, together with stabilization treatment, can reduce intergranular corrosion.

A high-alloy steel that can resist corrosion in the air or in chemically corrosive media. Stainless steel has a beautiful surface and good corrosion resistance. It does not need to undergo surface treatment such as color plating, but instead exerts the inherent surface properties of stainless steel. It is used in many A type of steel, commonly referred to as stainless steel.