It has a black nickel coating. See link for the exact specifications of the magnet.
https://www.kjmagnetics.com/proddetail.asp?prod=DX04B-N52
As far as impact goes, there was some and I also recreated a situation where I was basically rubbing the magnet on the hex key and it eventually broke...
Hello all,
So I was investigation the use of a neodymium magnet with N52 strength to see if it fit my application. The magnet also came into contact with my steel alloy hex keys and broke apart when I try to remove the magnet off the hex key. I was wondering what happened to cause this...
