Here is a YouTube video on a test performed on knife blanks made from 1095 steel. The knife maker did a very good job of performing this test and the results were suprising to him. He did not use every known metal protectant out there but only what he chose for his application. Have a look & you be your own judge --
https://www.youtube.com/watch?v=O7ZThs1y8xs&feature=youtu.be.
