Re: MagnaCut Corrosion Resistance testing thread
Posted: Thu Jan 19, 2023 12:26 pm
Hi All first time post to these forum thanks for the info. I work in the shipbuilding industry and have worked on a lot of corrosion issues.
just wanted to shed some light on what I think is happening with the nail resting on the blade test.
Stainless steels get there corrosion resistance from a chromium oxide layer that forms on the surface. Resting a nail on the surface will disrupt this oxide layer and stop it reforming correctly resulting in corrosion. you will see this happen on the dishwasher sometimes went stainless utensils are touching each other.
To rule out galvanic corrosion rest some sort of hard non-metallic material (ceramic/glass/rock) on the blade and repeat the test and see if it affects the blade in a similar way. Note that it should be arranged to apply a point load as i think it needs some pressure to cause this effect.
Cheers
just wanted to shed some light on what I think is happening with the nail resting on the blade test.
Stainless steels get there corrosion resistance from a chromium oxide layer that forms on the surface. Resting a nail on the surface will disrupt this oxide layer and stop it reforming correctly resulting in corrosion. you will see this happen on the dishwasher sometimes went stainless utensils are touching each other.
To rule out galvanic corrosion rest some sort of hard non-metallic material (ceramic/glass/rock) on the blade and repeat the test and see if it affects the blade in a similar way. Note that it should be arranged to apply a point load as i think it needs some pressure to cause this effect.
Cheers