Thread: does alum tarnish actually damage carbon steel

I have seen a few threads recently that talk about alum tarnishing steel, what I want to know is whether that tarnish is harmful or not. If its just discolouration then it wouldnt worry me, but if its going to rot a blade then I would be concerned.

It isn't a problem for me at the moment, but as I use alum for grip, at some point it probably will become one.

Thanks for your time.

I know for a fact it will tarnish a carbon steel blade,I posted a pic showing the effect after 15 mins.Will that tarnish progress to pitting? have no clue.
I do not understand why one would use alum for grip.

Alum on the fingers of your non razor hand helps to grip onto wet skin when stretching. I saw the pic you posted pixel, that was one of at least two threads talking about alum tarnish. I thought a thread in this forum might yeild a categorical answer as the metalists who hang around here will hopefully read the post and respond.

Its the no idea part of your post that I hope to clarify.