why mild steel has lower susceptibility to crevice corrosion than stainless steel?
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Stainless steel has passive layer on the surface. Mild steel doesn't have. So what? When the ions comes with contact with stainless it will damage the layer locally. So that localised part is act as anode as compare to other area. So that part will start corrode much faster rate. Incase of mild steRead more
Stainless steel has passive layer on the surface. Mild steel doesn’t have. So what?
When the ions comes with contact with stainless it will damage the layer locally. So that localised part is act as anode as compare to other area. So that part will start corrode much faster rate. Incase of mild steel, if the ions damage the surface it will behave as same as before. Bcoz there is no such type of surface layer.
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Beacause in case of stainless steel, it consists of 18% Cr and 8% Ni where Chromium form protective passive film as it comes in contact with oxygen whereas no such passive film forms in case of mild steel.
Beacause in case of stainless steel, it consists of 18% Cr and 8% Ni where Chromium form protective passive film as it comes in contact with oxygen whereas no such passive film forms in case of mild steel.
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